here's what I came up with, not an exhaustive list though:
on the top left there's homer(os), lenin, Bill Clinton, colombus (judging from the ship in the background), jackie chan, churchill, napoleon, che, castro, marlon brando, arafat, caesar, george bush, osama bin laden, kofi anan, gorbachov, dante
then on the second row: pele, de gaulle, thatcher, elvis, shakespear, lincoln, mao, marylin monroe, pavarotti, salvador dali, prince charles, ariel sharon, mother theresa, kaisar wilhelm (?),
then there's audrey hepburn, hitler, mussolini, saddam hussein, deng xiao peng (?), queen victoria, marx, engels, michael jordan
then on the bottom there's charlie chaplin, ford (?), mike tyson, putin, shirley temple, einstein, mozes (?), ghandi, picasso (?), toulouse lautrec (?) brunnel (engineer guy?),
qsudifhkqsdhfmsklfhjqmlsdfhjqkmsldfhjmqklsfhmqlsfhjqmsklfhqmskjdfhqsfq
sdffdgjfhjdfhgjhsfsdfqgsbsthzgflqkcgjhkgfjnbkmzghkmqrghqmskdghqkmsghnvhdf
qmkjghqmksdjqlskhqkmsdhqmskfhjqmskjdfhqkmsdfjhqmskfhjqkmsjdfhqkm
sjfhqkmsjfhqkmsjfhkqmjsfhqksdjmfhqksjfhqskjdfhnbwfjgqreutyhaerithgfqsd
kjnqsdfqsdfqsdfmkjqhgmkjnqsgkjmhzdflmghjsmdlghjsmdkghmqksdjghq