If you liked Love Hina and are looking for a good romantic comedy, may I recommend:
Ai Yori Aoshi - some people didn't like this one as much as His and Her Circumstances, but I liked it better. It's starts out as a really sweet romance and then turns into a full-blown harem comedy with remnants of that romance to fill in the bits. Plus if you act fast you can get all five DVDs for one low price at The Right Stuff International until tomorrow morning (it's a weekly special).
Mahoromatic - There are two seasons to this series, for a total of six discs plus a "summer special" OVA. Take the romance of AYA away and put in some great action sequences, and keep all the harem comedy, and that's what you get here. Plus it's from GAINAX, the studio who brought you FLCL and Evangelion among others, so you are assured great production quality. And of course lots of boobies!
Maison Ikkoku - Based on the popular manga by Takahashi Rumiko, who also created the Ranma 1/2, Inuyasha, and Urusei Yatsura manga series. Think of this one as a comedy/drama, about a bunch of misfits who live in a Japanese co-op. It's a big commitment, because the series goes some 96 episodes, and only the first 36 episodes have been released so far on R1 DVD, but it's a great, great show so far. Highly recommended.
Fruits Basket - I have it, but I haven't watched it yet. So many people have sworn by this one, so it could be worth your while to check it out. Plus the entire series is only on four DVDs, so it's a fairly cheap investment.
Jeremy