Current physical addictions: Caffeine. End of list.
Former physical addictions: Amphetamines, alcohol.
Current psychological addictions: Sex (either with a partner or my hand, but if I go more than 36 hours without an orgasm I get really antsy). End of list.
Former psychological addictions: Romance (including marriage) is practically the definition of a psychological addiction, complete with vicious withdrawal when it is taken away. I say "former" because it's been a fair while since I've been in a relationship---several months---and the need has subsided, at least until I meet the next girl and the cycle begins anew.