Free puzzle games I love - what are you playing? (note "free" - no demos/pay/adware junk, just straight up free games). The downloads from BlackBerry Help (mobile.blackberry.com) don't count, we all know about those.

BombSweeper ('qw' marks bomb on suretype keypad)
http://www.getjar.com/products/2640/lotecBombSweeper


Pipes (try 14x16 grid on a 240x260 res screen)
http://www.getjar.com/products/4808/Pipes


MM Reversi (this is the hardest reversi game to beat ever, wow)
http://www.getjar.com/products/1292/MMReversi


Sokoban (hundreds of levels)
http://www.getjar.com/products/2667/lotecSokoban


So what are you playing? I prefer games that don't have timers or require constant attention, as I get interrupted frequently, put the game aside, play during commercials, etc.

PS: make sure to post a link where we can download!