I'd say Eugenie Levy is probably better known than Biggs. At least that's what I'd think. Then if you don't know who Stiflers Mom is you've lived under a rock for far too long. You may not know her name, but lets be honest it wasn't her name you were watching it for.
Yeah but Levy and Coolidge were known before AP. AP is the only reason anyone knows who Biggs is.