Gordon-Levitt's bike crash on set
Joseph Gordon-Levitt has cut his arm falling through a taxi window, shooting his new cycling movie.
The Inception star is filming action thriller Premium Rush on location in New York and was involved in a real traffic accident, posting a video of the taxi wreckage and his bleeding arm on his blog.
Joseph wrote: "My first real wreck today - busted through the rear window of a cab.
"Luckily got my elbows up. Could have been way worse. No, but it was my fault, I was going too fast.
"The director, Dave Koepp, was extremely concerned for my well-being, but I made him record the wound.
"Anyway, Premium Rush is gonna be awesome. Gratuitous ER footage to follow, stay tuned..."
The 29-year-old actor had 31 stitches in his arm following the accident.
Joseph stars as a bicycle messenger, who picks up a package at Columbia University and subsequently catches the attention of a dirty cop.