Keurig's were everyone in my family's Christmas presents LAST year!

...And everybody loves them.
I tend to buy our K-Cups from one of two places:
www.coffeeforless.com is good - they have good customer reviews, and you can get 6% discounts when going thru ebates.com
www.coffeeicon.com - I tend to use this one the most. They normally sell 24-count boxes for $9.99. We just all get together and place an order at the same time, so that we can get free shipping.
The keurig.com website, itself, is nice, too - to be able to buy those 5-count samplers - a nice way to try out flavors...
As far as favorite flavors - my husband likes the Tully's Kona, the Donut House Cinnamon Roll, Gloria Jean's Cappucino, and the Coffee People Donut Shop. My Mom likes the Caribou Blend Decaf... My Aunt likes the Timothy's German Chocolate Cake... My brother-in-law likes the Green Mountain Nantucket Blend.
Me? I don't drink coffee!

..But I think the Keurig's are just the COOLEST thing. I'll be filling everyone's Christmas baskets this year with various K-Cups!