I never played them when they first came out, but I honestly didn't enjoy them as much as I had hoped I would. I adore platformers, I love cartoony, semi-witty games, but the Sly games just... bored me. I'm still going to keep my eyes on Sly 4, but I'm not looking forward to it as much as I was after playing through those three games.
Just beat Spelunker mode and got the 3D Dot Game Heroes. Well, not technically... one more trophy to get, "Play Spelunker mode for 10 hours." So I basically have to leave the game on while sitting in an inn to run down the game clock. But after that... yeah, finally done with this one, after playing off and on for a month.