Because people are too good to read the previous pages for information, a concise list of selling points for those who have made it this far:
0: It's a Samsung Galaxy S class Android device. Please note the explicit lack of the word 'phone'.
1: This device is not a phone.
2: This Android device has access to the Android Market. Bring your own connection with wi-fi or turn your cellphone into a wi-fi hotspot so this device can connect.
3: This device requires additional hardware to connect to a cellular network. Namely, your cellphone, turned into a mobile hotspot, because this is not a phone.
4: This device runs Android 2.2, colloquially known as 'FroYo'. Support from the device manufacturer is in question - it may support Gingerbread or newer flavors of Android in the future. No guarantees that it will be Samsung serving up the scoops of new flavor -- as others have noted before me, and as I can attest on my own, Samsung tends to not be very prompt with updates.
5: You notify Woot, not Samsung, of product defects if something malfunctions through normal wear and tear. If your fingers are made of, coated with, or otherwise exude butter-like qualities, consider adding the SquareTrade warranty, and adding the accidental damage coverage. $41 for 3 years is very likely going to be cheaper than replacing a shattered display and its digitizer if you drop it.
6: There are plenty of audio applications for this device that will play the majority of what I think you all will play.
For the general MP3 and Ogg crowd, you will likely be fine with the onboard MP3 player, or might want to use DeaDBeeF, Google Music, or the Amazon music player (of which GMusic and Amazon both support their cloud-based services if you're near wi-fi for this device). DeaDBeeF has support for AAC streaming, which the default player does not. So yes, you can now listen to your Groove Salad streams while you're at it.
For the "I listen to SNES and NES music rips in their original SPC and nosefart formats!" crowd, you'll need DroidSound. Yeah. There's a player for that, you hipster.
7: The wall wart that comes with this and most other devices does a great job at charging the battery rather quickly, but it wouldn't hurt for you to connect the device to your PC overnight for charging if you are the "I leave my desktop on overnight" type. The slower charge'll do you some good, by not heating up your battery with the rapid charging the wall wart's usually capable of.
For the tl;dr crowd:
NOT A PHONE.
IT RUNS FROYO.
STILL NOT A PHONE.
THERE IS AN APP FOR THAT.
BRING YOUR OWN WIRELESS CONNECTION OR MOOCH OFF THE COFFEE SHOP'S WIRELESS, YOU HIPSTER.
Hope this simplifies things.
* edit: that is a very interesting word filter, wootmazon. The Day the Ponies Come Back (2000), meet shattered.