Yeah, it's especially bad if there's certain combo moves or sequences that need to be remembered and I've long forgotten them. And then not having those kinds of things for certain encounters means you're getting destroyed. MMOs are especially bad for this and I find myself having to retrain and practice on low level monsters again just to get a feel for how to do things again.

I find FPS games are pretty easy and quick to get back into if I haven't played them for a while. Heck most of the time I barely even feel the hiatus with those kinds of games.