Does your fan go full speed during movie playback?

Just wanted to get a consensus here. I think my MBA is starting to normalize (it seems that going on battery power stabalizes things). Within about 90 seconds or so of finishing a movie in itunes the fan and temp went down dramatically.

Does your fan go full speed during movie playback? (not youtube or anything, but actual large clip video files)

Everything is now back to normal for me, weird.
I think it must have something to do with the power adapter and how everything can react.

iTunes tv shows after a while go full speed rpm. Though no jerkiness or anything, so all good. I guess it is just normal if your are playing a big ol video file.