Congratulations.

A warning: the N900 needs a lot of work in order to make it the best computerphone in the world.

Other flaws:
1. Badly soldered USB socket. Please read threads on this, it's only a matter of time before yours goes.
2. N900 only has 256MB. This means it's swapping to flash to do almost anything. Worse, after a while, the swap space becomes a mess and you have to reboot or do some clever trickery with an SD card.

Must haves:
1. CSSU Thumb. This essentially a community-written update of Maemo. Thumb refers to a memory reduced version produced by a resident genius.
2. Opera Mobile. Pretty much the only commercial app produced for Maemo in the last 2 years (ever?) and updated only a month ago. Flawed but amazing.
3. HDR Capture. Takes HDR pictures that are 3x better than what ordinary cameras can do in high contrast lighting.
4. ModRana. Nokia's mapping solution sucks. ModRana makes use of the N900s GPS.

There's pretty much an app for everything. Two of my favourites are SleepAnalyser and Evil Alarm.

One of the best things about the N900 is this community. I don't know if we'll ever have Sailfish on the N900 but if it's possible, this community will do it.