Sexual enhancement through supplementation or topical application?

Any male who has thought even casually about their options for sexual enhancement will likely have concluded that they can either: a) take a capsule- or tablet-based supplement; b) try a topical solution, such as a cream, lotion or gel; or c) go the surgery route.

Since the last option might be considered most risky while being weighed down by a high margin for error, it would be safe to say that most men that have tried a sexual enhancement product have ended up using a pill or a topical solution.

Of course, there are risks involved with many products, regardless of type or form of administration: irritation and allergic reactions for topical products and common side effects associated with pills, for example.

Actacaine™ is a topical spray that contains a local anesthetic called Lidocaine. Some men might be concerned about the potential side effects such as penile numbness and, according to some reports, temporary impotence. Anyone have experiences to share for or against this product?