Just got mine a few days ago, ordered directly from the Nokia website. Amazingly, it arrived four days after I ordered it. It took me about 1/2 hour to completely lock myself out It went into an endless bootup loop so I had to flash it with a new image and start over. After a day MMC card was full and I was getting finger cramps from typing long URLs using the on-screen keyboard. I found a good deal on a 1GB SanDisk RS-MMC card and a Think Outside BT keyboard. Much better now.

Things I've tried so far:

- Pairing with a Mac Mini via BT and browsing the mac's disk (couldn't get it to work with bluetooth on an IBM Thinkpad, though).
- Browsing the RS-MMC card as a USB drive from both Mac and XP.
- Connecting to the net via a NetGear 802.11g router with full security (WPA, MAC address filtering, etc).
- Running Python (woohoo!)
- Mounting NFS volumes from a ReadyNAS server.
- Playing back AAC music files from MMC and network mounts.
- Downloading RealVideo to the MMC card and playing it back. Comes out a little pixellated, but otherwise worked.
- Playing streaming audio from a SlimServer box and controlling the server via browser.
- Installing a bunch of prebuilt Slackware-ARM shell tools like korn-shell (courtesy of http://vidar.gimp.org/n770/slackware.phpx).

Things that would be cool to see run on the 770:

- More Python libraries (like networking and wxWidget).
- Flash player higher than version 6.
- Skype.
- GPS, scanner, IR, webcam, camera, and printer (ok, kidding).

This is one of the coolest gadgets I've ever played with. It's got a long way to go before it's consumer-ready (by which I mean, iPod level ease-of-use) but for techie types, it's great.