Actor William H. Macy's performance on Broadway was plunged into darkness on Tuesday when a technician accidentally hit the lights before the play had finished. Macy is currently starring in David Mamet's "Speed-The-Plow" after taking over from Jeremy Piven, who quit the production with mercury poisoning last year.

But theater-goers in New York this week were left baffled when the lights went out during the final scene - leaving Macy and his co-star Raul Esparza struggling to complete the performance.

Esparza told the crowd, "Someone has been doing a little too much of this," imitating someone smoking a marijuana joint.

Macy then added, "Can we do our last four lines? Where were we?"

After finally completing the scene, the cast received a standing ovation, according to New York Post gossip column PageSix.

"Speed-The-Plow" will conclude its limited run on February 22.

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(This news article provided by World Entertainment News Network)