By Tim Masters
Entertainment correspondent, BBC News
Law has already captured awards for his performance
Jude Law and Rachel Weisz have scooped the acting honours at this year's Whatsonstage.com theatre awards, voted for by the public.
Law won for his portrayal of Hamlet, while fellow screen star Weisz captured the vote for playing Blanche DuBois in A Streetcar Named Desire.
Wicked was named best West End show by the theatre website's readers.
Waiting for Godot, starring Sir Ian McKellen and Sir Patrick Stewart, was named as theatre event of the year.
"For me it was not just event of the year, but the event of a lifetime," Sir Patrick told the BBC.
Sir Ian said: "I enjoyed it so much that even when Patrick and Simon Callow had to go onto other things I couldn't leave go of [his character] Gogo."
He is due to continue in the role until April, with filming on Guillermo del Toro's two Hobbit films, where he will reprise his role as Gandalf, due to start shortly afterwards.
Sir Patrick also won best supporting actor vote for his role in Hamlet, with Miriam Margolyes winning for Endgame. Hamlet also took the honour for best Shakespearian production.
The awards were held at the Prince of Wales Theatre and were hosted by Christopher Biggins and Mel Giedroyc.
Neither Law nor Weisz were present to pick up their award. The pair, both nominated for the Olivier Awards, already scored success at Critics' Circle ceremony last month.
Waiting For Godot was named theatre event of the year
But Law, who is filming in Japan, sent a video message and Weisz's award was accepted by her Streetcar co-star Ruth Wilson.
Other actors at the awards included Bafta rising star nominee Nicholas Hoult, Diana Vickers, Lynda Bellingham, Alison Steadman and Jason Donovan.
Rowan Atkinson topped the musical actor vote for his role in Oliver!, while Jodie Prenger - Nancy in the same production - won best supporting actress.
Prenger told the BBC: "It was the most magical thing ever to stand up there and accept a real award - because the last I won was disco dancing champion at Pontins!"
Oliver! also won in the best musical revival category.
Patina Miller, the lead in Sister Act, won the best actress in a musical accolade.
Priscilla Queen of the Desert also won two awards, including best supporting actor in a musical for Oliver Thornton.
Jez Butterworth's Jerusalem, which has just transferred from the Royal Court to the West End, won best new play.