Ummm... well, that's not a yes or no question.
Yes, Cowboy Bebop is one of the best animes ever made...
But No, it sucks beyond the telling of it if you watch the pile of shit Cartoon Network airs on Saturday Nights...
Oh yeah, and as far at the spoiler thing, I liked the ending. If all endings were happy and majestic and special and glowing, wouldn't they be a touch too Disney? That's one of the most fantastic things about anime. You never know how they're going to end. You want a fantastic ending for you, watch Evangelion.