Avoid silly gimmicky companies like Logitech and Creative.
The Audioengine A2's are excellent compact speakers. The Klipsch Promedia 2.1 system is also a good option if you have the room for a sub, also, take a look at the Swan D1080MKII 08's.
I got a pair of Sony SS-B1000 bookshelf speakers and an amp off of Amazon for around $80. Probably not quite as good as the Audioengines but I'm pretty happy considering what I paid.
I recently purchased the Audioengine A5's and they are great speakers for the money. I know they are probably a bit out of your price range, though. If the A2's are anywhere near as good, I would grab them.