Not Cathe but..
Supplements will depend on the goals you are looking to acheive..
I, for example, take BCAA's before and after my workout for protein synthesis, I take Glutamine after for recovery (both powder forms I put in my shakes, but pills are also available).
I take protein powder smoothie in the blender immediatly upon waking for instant, fast-digesting protien to "break the fast" from sleep (Im obviously looking to build muscle here), also post workout and before bed.
I can't help you in regads to fat burning if you're looking for it, however Ive heard some great things about Biotest (I think specifically its called Hot Roxs???)
I think that the "mystery supps" are best left if you're really *hardcore* on the routines.. just my opinion though..
Im about 3 weeks into Biotest Se7en supps, they are for real hardcore lifters and Im expecting to see some results by the 5 or 6 week..
When I was trying to lose weight a few years ago I actually took the Mega-T (green tea) tablets and I found that they helped-- in conjunction with a strict diet.. so again.. it depepnd on the results you're looking for