Out of the list, my personal pick to look at again would be Gerbil Physics. In the AAWP review of the title, I found a fun game that challenges you to release the rodents with proficient use of explosives and planning.
Most importantly though, Gerbil Physics is fun to play. It's easy to get lost in a long gaming session, or just pick it up for a few levels. There's a certain innocence to the game that comes through in the playfulness. You can retry levels as many times as you want, there's no real danger or clock watching to put pressure on you, it's just you and your bombs.
Thanks to the Windows Phone blog for the heads up.