John Finnegan is, by now, a veteran American actor who has kept working through several turns of the industry. Among the rest of the work, 'Last Action Hero' stands out. The trail of credits goes back as far as 1972. There are 29 entries on the filmography, most of them supporting work in other people's stories. 'Mars Attacks!' sits at the front of the filmography, where he plays Speaker of the House. Read more