Besides the basics like fish oil, protein powder etc -
Fav - Dymatize liquid AMP'd (used to send me fucking crazy in the gym - never had anything like it/cant get it anymore!), V12 Turbo by SAN, Res100
Least fav - Ultimate Nutrtion apple flavored whey I bought on sale once - worst shit I have ever had, Gaspari Superpump - gave me the shits everytime, albuterex - I honestly thought I was going to die from vomiting and shitting - this was hands down the worst I EVER felt after taking a supplement, vomiting, shitting, cramps, headaches, dizzy etc etc and this went out for around 12-13 hours - prob a heap more but these 3 stick out