An N810 was the first thing I bought when I got my on-call bonus money (first job I had that had On-Call responsibilities, paid extra money for our on-call week.) My cell phone had bluetooth, and I could tether from it. Meant I could do all my on-call stuff without having to lug a laptop around or be stuck in the house.

That thing was awesome. Maemo, the linux OS on it, wasn't.