eye candy

eye candy
    n 1: visual images that are pleasing to see but are
         intellectually undemanding; "he wanted to put some eye
         candy on their web site"
    

eye candy
 /i:' kand`ee/, n.

   [from mainstream slang "ear candy"] A display of some sort that's
   presented to {luser}s to keep them distracted while the program
   performs necessary background tasks. "Give 'em some eye candy while
   the back-end {slurp}s that {BLOB} into core." Reported as mainstream
   usage among players of graphics-heavy computer games. We're also told
   this term is mainstream slang for soft pornography, but that sense
   does not appear to be live among hackers.