Daniel Day Lewis(has made 10 movies total, 3 Oscar Noms. phenomenal in last 3 films, need I say more)
Bill Murray (probably has the best range, next to J Depp)
John Tuturo (name a good movie, he's in it)
George Clooney(lots of range, Roseanne, can direct and write as well)
Ian McKellan(can't dispute, he's what Peter O'Toole could have been)
i dunno mate, in the late 70's -80's both de niro and pacino made some incredible movies with excellent performances. de niro played travis bickle,don corleone,jake lamotta and madse each role his own...to say he has no range is blasphemous
Daniel Day Lewis(has made 10 movies total, 3 Oscar Noms. phenomenal in last 3 films, need I say more)
Bill Murray (probably has the best range, next to J Depp)
John Tuturo (name a good movie, he's in it)
George Clooney(lots of range, Roseanne, can direct and write as well)
Ian McKellan(can't dispute, he's what Peter O'Toole could have been)
good list though aaron,day lewis is the bomb i agree and you obviously have put some thought into this. not my top 5 but some top taleny there.
oh and torturo was superb in o brother where art though
Marlon Brando - How he carried some of the subtleties of his scenes... Watching "The Young Lions" recently, you can see where he was influencing the director and not the other way around
Peter Sellers - Not just his comedic work. But watch how his maniacal improvisation in "Lolita" will blow you away.
Ben Kingsley - Both the lead role of "Gandhi" and Don Bass in "Sexy Beast"? Holy crap...
Sean Penn - Perhaps the most intensely focused actor, with one of the greatest acting ranges, going today
Philip Seymour Hoffman - Too many astounding supporting roles to name, and killer lead roles too
Honorable mention?:
Benecio del Toro - This one is more a sentimental favorite. Not a lot of range here, but what he plays he plays so well