I like TurboTax. It makes it easy enough to file your taxes that you can do it while, say, three margaritas to the wind after celebrating a recent promotion.

Not that that is a personally-relevant example or anything... >.>

(p.s. Katie just finished the second book in The Girl With The Dragon Tattoo trilogy, and she actually threw it away from her, grabbed up the third book, ripped off its dust cover, and frantically flipped to the first page. Yeah, it's that kind of cliffhanger. :D)