My wife and I are watching the X-files season box sets (were on season 5 right now) after what season is it recommended to watch it. I have to say that this has been a great series, season 5 has been the best so for and I am looking forward to viewing the remaining sets. I bought the entire series at once, it was a bit pricey but well worth it, it looks great on the shelf next to Buffy and Angel.

You should watch the movie after season 5. Season six builds on stuff from the movie.

Absolutely right - the movie came out during the summer between seasons 5 & 6, and while it can stand alone without the series, it's designed to fit comfortably between the seasons.