Hasselhoff in Court With Estranged Wife

David Hasselhoff made a surprise appearance in a Los Angeles courtroom Tuesday. Also present -- his estranged wife, Pamela, and their two daughters.

The judge closed the courtroom to the public and reporters on the grounds that sensitive child custody issues were discussed. We're told one of the issues involved the children's travel arrangements.

Court documents reveal that Pamela has accused David of domestic violence -- in one instance, allegedly breaking her nose. He has denied the allegations.

During a break, the former 'Baywatch' star went out into the hallway and sang a song in German to a random woman.