I need 32x32 pixel tile based (not isometric) tilesets. Here's all I've found that I like.
(http://img375.imageshack.us/img375/2711/mmchip06wk.png)
(http://img157.imageshack.us/img157/9125/mmchip17ld.png)
(http://img157.imageshack.us/img157/2562/mmchip25hc.png)
(http://img157.imageshack.us/img157/1465/mmchip30tm.png)