Bebop is one of the best animes of all time. Loaded with action, comedy, drama, romance, all in a sci-fi setting; it is a classic. Best english dub ever... I don't think I've ever seen an entire episode in Japanese.
Memorable characters. Spike is my favorite anime character of all time; my Spike Spiegel Messenger Bag might just be one of the best purchases I've ever made.
Awesome music. I listen to the soundtrack every single day. The jazz is amazing, as only Yoko Kanno and The Seatbelts could make such a spectacle. It's the main reason for my favorite radio station being CD101.9
Do I need to say more? Cowboy Bebop. . . You're missing out if you haven't already seen i.