Having just come off multiple months of our daughter being in the hospital in some very grim (at the time) circumstances, I can say that while visits from celebrities are many, visits from celebrities that actually care are few. I would have loved to have seen Batman (even the Lenny B. Robinson version) wander down our ward.
Yes. My son spent several months in a cancer ward. ... His best (and only, to my memory) visit from an "outsider" was an honest-to-goodness Santa Claus in the nicest Santa outfit I'd ever seen.
My son's Wish (from Make-A-Wish) was to visit Spider-man. He was very much into superheroes. Although we did get to see him on a "wish-trip" to Universal Studios, he was too small for the Spider-man 3-D ride by about four inches. We would have loved to have a hospital visit by superheroes ... but alas, I think the controlled entry nature of the cancer ward made it so many there at the hospital "just to visit" ended up in other areas.
He was diagnosed two weeks before Christmas (2007). The Make-A-Wish trip to visit Spider-man was the following July (they work quickly!), and last time he was healthy enough to be up and about.
He passed away three week later, just before his fourth birthday.
... and that's why an article about Batman made me cry.
The world needs more of this guy.