I searched every variation I could think of on those two names, and surprisingly (unless search hates me) found nothing about the similarities between Pixar's "Wall-E" and the Number 5.
I also find the Writer/Directors comments to be a little, I dunno, something that isn't good. Via Rotten Tomatoes:
"Writer/director Andrew Stanton shared details about the creation of the last robot on Earth and admitted that WALL-E's likeness to the beloved Johnny Five was pure coincidence, explaining that the inspiration for the futuristic trash compactor came from a pair of binoculars he fiddled with at an Oakland A's game. When a WonderCon attendee posed the Short Circuit similarity to Stanton, he replied that he'd honestly only seen the movie once in his lifetime."
He admits the likeness, but says that its a coincidence? To again quote RT, "Right..."
I would think that at a company like Pixar, SOMEONE had to have come out and say "Umm, guys, you know Wall-E kinda looks like Johnny 5?"
I'll still see the movie though, as the animation looks top notch (of course), and its pixar, it is simply impossible to hate their movies.