bitcoin is quite low due to all that MtGox panic, so this may be
Otherwise: any new coin. Although it is:
risky - coin may die or become close to worthless
difficult - you have to understand cryptocurrencies to at least guess its possible potential/usefulness/inovativness, to verify its claims, like checking for hidden premine/instamine, ... many coins have different stated (calculated) and real coin cap (incompetent dev that can't do the math right
![Smiley](https://bitcointalk.org/Smileys/default/smiley.gif)
), or to discover possible coin flaws (to stay from that one out)
But if done right, there is a chance for some pump and dump profit.