He began his career in 1970. I counted over 80 credits in his filmography. Those residuals certainly add up! He has sung songs on some of the soundtracks for more upfront and residuals. There's also income from the merchandise and games associated with his films. I was just watched and was amazed by his performance in "kiss kiss bang banG" (that's how its titled!) opposite Val Kilmer and Michelle Monaghan. There is a fight scene in it at about the 15 minute mark that plays like George Zimmerman's police statement and it shows how he could have reached to get his gun (even though Downey is unarmed, his lower back gets exposed). And last night TNT aired his portrayal of Sherlock Holmes which was phenomenal. Other memorable efforts came in "Weird Science", "Air America", "US Marshals", "Bowfinger" and "A Scanner Darkly".
His films from last year, their gross and what his 10% should be:
"Sherlock Holmes A game of Shadows" (release 2011 but 2012 income)$500 million, $50 million
"The Avengers" $1.5 billion, $150 million
So, he's probably only getting 5% on his part of the two franchises, but that's his business after all, not ours, si?
"Ironman 3" is up to $1.2 Billion boxoffice so far this year!
If you aren't seeing Heaven while you dream, you're doing something wrong.