Shiny

I got myself a brand new phone today! I haven't had a cell phone for almost 2 years and I really found I need one for school. At work I could just use the work phone, but at school there isn't one anywhere nearby. It's an LG Optimus 2x and I'm just trying to get a feel for the touch screen. Anyone recommend any Andriod based apps (that are free) that are any fun/good?