I've been playing Princess Peach Showtime. I received the game on Thursday and saw the credits roll on the same day. But it looks like there's enough content to require at least around 15 hours to collect everything. A game on the short side, but it manages to stay interesting throughout, so it doesn't feel like a rip-off.
My impressions so far are that this one will rank in the bottom half of Good-Feel games, but this isn't so bad when their low point was Yoshi's Crafted World. My ranking of their games will probably look like this once I am all done with PPS:
1. Wario Land: The Shake Dimension
2. Kirby's Epic Yarn
3. Yoshi's Woolly World
4. Princess Peach Showtime
5. Yoshi's Crafted World
Legend11 correctly predicted that GTA IV will outsell Super Smash Bros. Brawl. I was wrong.