I am a big TD Fan too!
I liked ZDefense but on my Tablet it's jerky because the android bar (android 3.2) is on a bad position - not so bad, cause ZDefense was made for phones. For me ZDefense was the only TD Game i liked -all others i've seen, didnt impress me much.
So i decided to do my own TD Game, i would be happy if anyone wants to try it out and tell me how it feels and how it plays. It's a classic TD on a HexGrid - nothing new. The only special Feature is, that the player can transform blocked fields into special fields.
I have uploaded a demo at the android market. It's my first game on android so i am not sure if it will work on the different plattforms.
Please be informed: It will ONLY work if you have a screen resolution of 1280x800 - if game works well i'll consider adding multiple screen support.
I named it "Tablet Tower Defense
" because i am the god of creativness *lol*