I got mine last night too.
I started playing around 9pm. I was only gonna mess around for an hour and head to bed, but before I knew it, it was 11:30pm.
Sucked me in. Alot of moves, cool story so far, great visuals, horse riding is sah-weet! Totally realistic. Sounds silly, but just wait til you do it, you'll be like "daaamn, that's pretty cool".
I can't wait to get home and play it tonight.
I don't feel this way about games very often anymore (I feel like a kid).
Oblivion did this to me also.