For those familiar with Symbian, WindowsOS, iOS, Android:

Which other phone can do what the n900 can:
- cisco VPN (via vpnc)
- ssh server
- TCP/IP over bluetooth (via ifconfig bnep0 up <IP Address>
- bluetooth tethering

I use this combo to connect to my company's computers via ssh using bluetooth on my laptop(I ssh to the n900 via bluetooth IP address).
Wi-fi tethering is a nonstarter as it drains too much battery.

What other phones can do this?