Here's Berkhan on supplements: www.leangains.com/2010/01/supplements-you-
I currently take a multi and fish oil. I may do creatine if I ever need to bulk (doubt it). Also you forgot to note caffeine, I know you use it. I take 50-100mg in pill format in the morning, and usually drink a cup of tea at work, though I'm told tea bags have pitifully little caffeine.
I do use brotein powders sometimes but that's extremely rare now and I doubt it will increase that much in the future.