In for a penny...

Xterm - unlocks the magic
OpenVPN - essential to check your email from an open access point without sending your user name and password in unencrypted form for anyone to sniff - unless of course you use secure email like gmail
VNC Viewer - use with OpenVPN to access your home computer securely while on the move - like a free GoToMyPC!
gPodder - keep up with the latest from Steve and Leo while on the move
Metasploit - lazy security check with db_autopwn
IPhome - your allocated local IP address at a glance
Airodump-ng - see what hidden BSSIDs are out there and the MAC addresses of anyone connecting
Autoscan - who else is connected? Prettier than nmap
netcat - the almighty

Pretty powerful stuff for a little handheld all in all...