Lela Star, Rebeca Linares and Brooke Banner are the common sense cases I thought of immediately.
Brooke Banner's cans were a tribute to gravity at work when she got fucked on video. What I don't really get is her uneven complexion, especially on her ass. As if she was burned by boiling water, stepped into the wrong area of a meth lab or someone applied her tanning solution while having an epileptic fit or Parkinson's disease. Watch some doggie in HD or good SD for demonstrative purposes. Blocky streams won't do the mess justice by any stretch mark.