If you want to get plastered:

I realized a new drinking game this morning. Take a drink every time the new White House Press Secretary Robert Gibbs says "Um" or "Ah". Poor guy would have you under the table in no time flat. Not that I could be masterful at that job, or have any interest in public speaking whatsoever, but when you get your focus stuck on an Umanaher it seems to take over the ability to actually hear what they are saying.

Sounds like time for Toastmasters!

Umanaher : (noun) A person who pauses between thoughts, and sometimes mid-sentence, during public speaking with the vocalization sounds of um (UH-MMM) or ah (AWE).