Drinking Vodka straight
Staying up late and sleeping in
Xenogears' gameplay
Dance Dance Revolution
Rhythm Games in general
Hello Kitty
Hamtaro
Sailor Moon
The First English Dub of Sailor Moon
CLAMP's more "girly" series like Chobits and Cardcaptor Sakura
Anime RomComs
Apparently liking the NES era FFs more than some of the more modern or well loved entries
and Strawberry Shortcake

...also most of my music collection has been described as guilty pleasure most likely because I actually like a lot of Popular Music from the last few decades and not spent my time "discovering" local/underground/alternative/metal/non-conformist bands like I was suppose to.