I like using the slang of "millies" and "mikes" for the more formal "millibits" and "microbits", respectively.

These names are very easy to remember, for those of us that understand that 1 milli = 1e-3 and 1 micro = 1e-6.  Certainly almost everyone on this forum is going to intuitively grok that nomenclature.  It also gives me the mental picture of a bill with a face printed on it, in the same way that the term "Benjamin" refers to a $100 bill.

[Edited]Also, it appears that we already have general consensus that 0.00000001 BTC = 1 satoshi.