BioTeams' Ken Thompson has some suggestions on how to hit the road with only a laptop and a cellphone and still stay connected to everything.
His key points:

• Store your data at an ASP service like backpackit.com
• Get web based email (natch)
• Makre sure all access works before you go
  

Ken references an earlier Dan Gillmor piece in the Financial Times on travelling(and Dan should know, man's a world-class globetrotter.) Dan's must-carries:

• Retractable cables, including phone-modem, Ethernet, USB, FireWire and audio connectors.
• A power supply for my computer that plugs into wall sockets and airplane-seat power outlets
• A 80 gigabyte portable disk drive
• USB headset and microphone system for Skype
• Casio Exilim digital camera
• Treo
• Bose QuietComfort 2 audio headphones

What tech tools do you bring on the road? Besides your laptop, that is?