6. Steven Seagal
Perhaps better known as Navy SEALs counter-terrorist expert Casey Ryback in Under Siege, Steven Seagal came to prominence with 1988's Above The Law and would later appear in Hard To Kill and Exit Wounds. Despite enjoying initial success, films such as the 1995 Under Siege sequel performed poorly and the majority of his films thereafter were direct-to-video, and often low budget. He returned to the big screen as Torrez in the 2010 action-exploitation film Machete, but the 60-year old is currently working on the third season of his reality show Steven Seagal: Lawman, which sees him performing his duties as a reserve deputy sheriff in Jefferson Parish, Louisiana, and he isn't likely to return to the action genre any time soon.