I know the feeling kimmy.

I'm in the opposite boat - know a fair bit about the paddy, but will probably never have one. *sigh* Still, I can live vicariously through this forum.
The paddy comes in 3 sizes - small, medium, large. I don't know the exact dimensions, except that the medium is about 15' end-to-end. I'm sure someone else knows, but the medium is the most popular size. If you see someone wearing one, its probably that.
It was released originally earlier this year, I think, in one colour - tan. Its often referred to as 'the campaign bag' on ebay. The following season (A/W 2005, maybe) they released some more colours - khaki, chocolate and rouge (bright red). This was followed by the grenat (wine red - Megs' bag), ivory, and bleu nuit, a sort of denim blue colour. Then came F/W black.
For the S/S 2006 season they've added whiskey (darker than the original tan), another chocolate (not sure what's different there, except the interior is darker), cream, silver, anthracite (fayden's newest), pale blue...and I think there might be a gold one on the way. Oh, and the grey/blue/black colour that Noriko had briefly.
That's all I can remember off-hand - if I've missed anything, folks, feel free to add it/correct it.

Chocolate

Grenat

Whiskey

Khaki

Blue nuit