IMHO, Top 5:
sex.tv (king of .com and even better in .tv)
sports.tv (but require big media backing and $)
news.tv (but require big media backing and $)
videos.tv (but require big media backing and $)
Something in financial such as mortgage/s or loan/s (remember, very monetizable product)
Then we probably have another 30-40 mega-great names that are very hard to rank such as:
weather, music, movies, xxx, hotels, dating, education, cars, college, school, wedding, home/s, travel, porn, whatever financial names were not top five (creditcard/s, loan/s, mortgage/s, insurance, etc), jewelry, pets, etc
EDIT: realestate added (definitely top 30)