I keep thinking about this. I don't watch my Star Trek dvds much, so I could sell them off and wait for the HD versions, which I will surely buy. But when? Does anyone actually have a plan for this? Any dvds that you will keep and not bother to upgrade?

I won't be selling anything in anticipation of an eventual HD release. In fact, a good portion of my collection won't ever be replaced at all. But for those will be replaced, I'll wait until I have the HD version, so I can verify that no extras were lost in the upgrade. Only then will I sell and/or give away my older DVDs.

I already started. I put my Bond DVDs up on ebay and got around $530.

I am still selling my laserdiscs and non-anamorphic/non-special edition copies of my DVD's - sheesh.

Only a select few titles. Namely favorites of mine like Star Wars and LOTR that have a lot of special effects and eye candy that make me want the best picture quality possible. I'm not a videophile, so I don't care enough to replace most titles, just the ones I absolutely love and think that will really benefit from the higher resolution.

I probably won't sell off my old ones. I'll either keep them for the extras or give them to friends/family.

As I replace them, I'll either sell them on eBay or give them to family/friends.

I don't plan on replacing most of my library (just because so much of my library is junk), but any movie I really think a lot of will be upgraded.

I'll probably do the same thing that I did with LD's. I got into DVD's at JUST the right time. I ended up replacing most of them during the days of HUGE deals from Reel.com and 800.com. Sold the laserdiscs on ebay and made a profit. More or less was an even deal.
Once a format is decided upon and the new versions come out, the DVD's will go "bye-bye"...of course, archiving any extras that don't make it to the new version

No and never. So long as I have a working dvd player in my house ( I have 6 now ) I will be watching dvd's.

Will probably update many in my collection - but won't trade them in (or give to my parents) until I've got the BR version.

Ill probably eventually replace most, some I wont bother with at all...I will be alot more choosey with what I buy on HD as I have purchased dvds that I have no idea why. Those Ill probably just sell or trade and cut my losses.

I'll be upgrading probably 70-90% movies as they come out. Not upgrading TV shows unless it's something I really like. I'm not sure about selling the older titles off, though it might happen if they still have a nice turnaround on Ebay.

if the movies are released as they are on DVD (ie same extra's etc), then I'm not going to bother to upgrade.

I'll follow the same rules I set out double dipping DVDs. If a Blu-Ray comes out and it is better than the DVD I have (in content, obviously), the the DVD will be sold off and the Blu-Ray will take its place. If the DVD I already own has more content, then I'll either wait on the Blu-Ray to catch up, or own two versions of the same film.

A good example of that second option is Clerks. I still own the original release, because of the drun ken commentary that doesn't exist on the 10th anniversary edition. So, I own two versions.

just my favorite movies, i wont be selling any of my dvds

I'll probably replace mainstream blockbusters, but for the vast majority of my collection (catalog titles and more obscure horror movies) I doubt I'll have the opportunity to do so since they may never even see the light of day in HD if the format is as (un)succesful as I expect.

Even if the new HD format takes off it will be at least 5 years before we start seeing a lot of lesser known catalog titles. Hopefully that's wrong, but I doubt it.

Similar to what others have said:

Replace mainly the movies that will benefit most from the upgrade-LOTR etc...as well as my favorites.

My DVD's will be used for travel (e.g. long trips with the kids)

Ah, the good ol' days. 800.com had some really good deals and Reel always had those $5 off $20 coupons.

I have around 200 DVDs since buying them since Dec. 1999. I will replace each one, most likely as I buy the HD version, I will sell the regular DVD version. I have been asking myself whether I should buy anymore standard DVDs, but I'm at the point where I only buy one here or there anyway at a good price. I have most of the movies I want to own. But, I do want to see how the format battle goes before I invest in something new.

NO WAY! DVD is just fine for me.

The day after i buy the High Definition replacement of that said DVD or LD and it has all the items of intrest from the previos release. Who says we will actually see half of what is on DVD on BR or HDDVD. You can not go by announcements, movies are cancelled all the time. No need to sell until you have its replacement.

Doubt I'll sell off anything....and just keep my dvd library complete. But really, it's still too far off to start making crystal ball type predictions about whats going to replace what. Jesus, I'm still waiting for over 50 more of my fave films to even hit dvd so I'm still in dvd library building mode. 5 dvds bought last week....6 more this week. It's fucking never ending!

Too early to tell what I'm going to do with my collection and will wait for Blu-Ray to win the war first before I plan my first move.

I think the big losers in this (and they are the most vocal anti-HD) are the speculators that think they are making an investment in DVD or try to buy and sell with a quick flip and turnover.

Once the formats start catching on, we will see the prices on the used market drop out and I think we'll see the prices on new DVDs fall too. I guess if you are planning on putting your kids through college with your DVDs, time's wasting everyday. Sell now.

Interesting note: yesterday I was cleaning the closet in our den and I threw away 15-20 VHS cassettes we used to use to recore our favorite programs. I can't remember the last time we used a VCR. I looked over the last VHS releases I have and I decided to try and sell the last few, saving only my assorted Star Wars VHS sets. I have a sealed copy of Fantasia on VHS, something I thought at the time was an "investment." Well that ship has long since sailed and I'll be lucky to get $3 for it.

My point is buy and enjoy what you want now, but don't buy with the intention to make a fast buck. That window is closing fast.

Standard DVD might be like laserdisc where the price of a used LD always fell on Ebay when the DVD arrived. With the massive installed base of DVD players, though, I don't see DVD going anywhere for years. The most likely scenario is that the formats coexist for several years, where HD discs are the niche format like LD was.

Even if a new format wasn't on the horizon, DVDs could never be a good investment. I think most people surely understand that.