Cool Nokia Series60 Smartphone running symbian OS, can do SSH IRC IMAP etc etc.
there is a patch which makes the phone vibrate actually work
This is a placeholder for good stuff.
http://www.symbianos.org/yabbse/index.php?board=2;action=display;threadid=258 contains i tutorial to get GNUBox working - i haven't made it work yet.
Some notes on using the Nokia N70 (and other series 60 phones) on Linux (Fedora) here: http://david.dw-perspective.org.uk/Nokia-N70-Series60-On-Linux.html