Joaquin Phoenix once again demonstrates his extraordinary versatility as a screen actor with his latest role as PI Doc Sportello in Paul Thomas Anderson's forthcoming mystery drama 'Inherent Vice' - but who else makes this unusual flick one to watch out for?

Joaquin Phoenix and Reese Witherspoon in 'Inherent Vice'
Joaquin Phoenix [R] to impress once again in 'Inherent Vice' alongside Reese Witherspoon [L]

Phoenix always surprises with his choice of movie roles, going from the deadly serious sect drama 'The Master' (also directed by Anderson) to the coy, technological romance (we like the term Comp-Rom) of 'Her', and now he's takes a new turn once again in this comedic 70s thriller. He's a private investigator who is forced to take on his ex-girlfriend Shasta's case when her new boyfriend Mickey Wolfmann becomes embroiled in a kidnapping plot by his scheming wife Sloane and her secret lover. 

Watch the trailer for 'Inherent Vice' here:

More: See clips from Joaquin Phoenix's movie 'Her'

Alongside Doc Sportello on his case is his lawyer Sauncho Smilax, played by none other than Benicio Del Toro - who is perhaps most recently known for his appearance in stellar comic blockbuster 'Guardians of the Galaxy'.

Benicio Del Toro and Joaquin Phoenix in 'Inherent Vice'
Benicio Del Toro [L] and Joaquin Phoenix [R] are a team in 'Inherent Vice'

Next page: Owen Wilson and Josh Brolin also appear in the movie