Everyone else's doing it...
Top 5 (In No Particular Order)
Chobits - Glorious show with swerves a plenty. Come for the comedy, stay for the compelling story.
Love Hina - Funny Funny, kinda gets awkward to watch with anyone else 'cause of the fan service... The manga is just as good, if not better.
FLCL - The anime for those with a short attention span, one can watch the whole series in one sitting. Amazing soundtrack thanks to The Pillows. Makes we wish for a yellow vespa.
Ranma 1/2 - I've only seen random OVA DVD's, but I've never been disapointed. Although once I was watching it with my brother and nieces and nephew and Shampoo was taking a shower, that was awkward.
Samurai Champloo - This series is still new to me, and the newness is probably why it's in the top five. The unique mix of Samurai and Hip Hop is intriguing, plus there's supposed to be a revolutionary video game coming out this year, but more news on that elsewhere.
Honorable Mentions
Excel Saga
Dirty Pair (the remake)
Cowboy Bebop (What I've Seen)
Case Closed