Oh, goodness. I think it's safe to say there are MANY options. The best thing to do is a tasting session. If that isn't possible (ESCAPE wedding or no travel plans), I'm sure you'll get many recommendations on here.
We had marble and Bailey's mousse at our Escape in June '08. IMHO...it wasn't as good as it sounded.
For our wedding in Jan '09, we had Chocolate cake with Peanut Butter Cup mousse (very good!) and the surprise favorite (even for me) was Lemon cake with Tropical Mousse! Amazing. And I'm a peanut butter gal.