Claim: Danny DeVito works.

Daniel Michael DeVito , Jr. -LRB- born November 17 , 1944 -RRB- is an American actor , comedian , director and producer . He gained prominence for his portrayal of the taxi dispatcher Louie De Palma in the television series Taxi -LRB- 1978 -- 1983 -RRB- , which won him a Golden Globe and an Emmy .   A major film star , he is known for his roles in Tin Men , Throw Momma from the Train , One Flew Over the Cuckoo 's Nest , Ruthless People , Man on the Moon , Terms of Endearment , Romancing the Stone , Twins , Batman Returns , Look Who 's Talking Now , Big Fish , Other People 's Money , Get Shorty , Be Cool , and L.A. Confidential and for his voiceover in such films as Space Jam , Hercules and The Lorax .   DeVito and Michael Shamberg founded Jersey Films . Soon afterwards , Stacey Sher became an equal partner . The production company is known for films such as Pulp Fiction , Garden State , and Freedom Writers . DeVito also owns Jersey Television , which produced the Comedy Central series Reno 911 ! . DeVito and wife Rhea Perlman starred together in his 1996 film Matilda , based on Roald Dahl 's children 's novel . DeVito was also one of the producers nominated for an Academy Award for Best Picture for Erin Brockovich .   He currently stars as Frank Reynolds on the FX and FXX sitcom It 's Always Sunny in Philadelphia . He directs , produces and appears in graphic , short , horror films for his Internet venture The Blood Factory .   DeVito 's short stature is the result of multiple epiphyseal dysplasia -LRB- Fairbank 's disease -RRB- , a rare genetic disorder that affects bone growth in those afflicted .