There are a lot of great ones out there, and not too many bad ones.

If you want semi-auto, I would recommend the Ruger 10/22 like a lot of other guys, for all of the reasons that have already been listed.

If you want bolt-action, my Savage Mk II is the most accurate .22 I've ever had, and an all-around great rifle. It will shoot sub 1" groups at 50 yards with the right ammo. I have a Marlin bolt action that has also been very good, and the accuracy is almost as good as the Savage.