Flash and Freeware games are where it's at! It's always fun to play a game before some big-name developer comes along and rips it off. Plus, many of them are amazing! Has anyone played 'Closure' on NewGrounds yet? That game is more enthralling and puzzling than anything that's been released on consoles as of late, and I had a lot of fun with the Art of Theft.
I would say the best part is knowing that you didn't have to pay for it, but that would encourage people to go and pirate great games like Earthbound, which does not help anyone get Mother 3 released over here!