What PDA apps are cool to have

[DJMK4]

I have a dell axim X51 at the moment which i use together with a CF GPS Card and tomtom to give me a sat nav...but thats all i use it for...apart from the obvious windows stuff (msn etc etc) what other cool apps are good to use on these?

EDIT: It has wireless and bluetooth

 

[DJMK4]

google maps may be worth adding to use as an alternative to tomtom?

Hmmm, ill give it a go but I think tomtom works really well on the PDA, plus it has the added bonus of speed camera locations.

Would be awsome if you could get Mozilla Firefox and Thunderbird for PDA's.

 

[DJMK4]

Nifty may give it a go!