Six Degrees of...No Wait.

 

So
  

Mark Strong was in RocknRolla with Karel Roden who was in Bathory with Hans Matheson who was in Sherlock Holmes with William Houston who was in Henvy VIII with Mark Strong who was in Robin Hood with Oscar Isaac who was in Body of Lies with Leonardo DiCaprio who was in Inception with Tom Hardy who was in The Virgin Queen with Hans Matheson who was in Sherlock Holmes with Mark Strong.

 

Obviously, my point is:

(shamelessly stealing unsettledink 's quote right here)

 "...they all get together once a month for drinks and talking about parts and character stuff and loling and maybe someone goes home with mark every now and then..."

 Y/Y ?