I always loved movies that had anything to do with Time Travel.
For the most part, my fav variation of this is the present day traveler going back in time.
My top 5 time traveling movies are ...
1. Time After Time
2. Back to the Future -1
3. The Time Machine
4. Bill and Ted's Excellent Adventure
5. Daleks Invade Earth: 2150-AD
I also seem to remember liking Time Rider, but I haven't seen it since new so I almost totally don't remember the story.
Also, there was a movie starring Jim Belushi as a bad guy ... and a Time Machine in the desert.. I forgot the title, but that one was pretty good.
What's your favs ?