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Ross and Monica's last name is Geller.
His name is Ross Geller, played by David Schwimmer.
Ross Geller's father on the show is named Jack Geller and is portrayed by actor Elliott Gould
Ross Geller is a fictional character on the television sit-com Friends, portrayed by David Schwimmer.
Ross Geller was a paleontologist.
He was portrayed by David Schwimmer.