GERN, ATHX, ASTM, I'm in these 3. I've feeling ATHX will be the highest % gainer simply because of the low float. If you know how to trade-in and out you can make a lot of money. I can't do that so I'm holding them long term. By the end of 09 they will be much much higher.
The PK/OTC ones like cbai, actc, are good ones as well if you know when to get in and how to trade them but very risky. These company have a tendency to raise money by selling shares in this kind of situation.
all the best.
btw- Tomorrow will be the signing of first executive orders of quite a few to come. Stem cell as a sector will do well.
Experience is the most powerful tool in the world !