Creatine is good and works. Glutamine is a good source of glucose for a dieting athlete as it doesn't spike insulin as someone pointed out, but thats it.
Other supplements that works:
Protein, EFA's, vitamins, arachidonic acid, ephedra+caffeine, yohimbe+caffeine, beta-alinine+histidine, EAA's, BCAA's, Leucine, 6-OXO, ATD.....
Tim is a little off