Tribute added to The Dark Knight

As some may have expected, a tribute had been added to The Dark Knight. This is what CNN had to say:

The end credits of the "Batman Begins" sequel include a farewell note to Ledger, who died in January from an accidental overdose of prescription drugs; and to special-effects technician Conway Wickliffe, who was killed last September in a stunt-car accident.

I was unaware of the other guy's death. It sucks that no one cares as much for him as they do for Heath Ledger.

Further, I find it funny that when someone overdoses accidentally on prescription drugs, there's no sort of outcry from people like there would be if someone overdosed accidentally on illegal drugs. Does no one see the problem of over-medicating people, no matter what the drug, legal or illegal? Hey, at least you can't overdose on marijuana.