“Michael J. Fox Show” (9:30 P.M., NBC): Don’t you hate it when this happens? On

“Michael J. Fox Show” (9:30 P.M., NBC): Don’t you hate it when this happens? On “The Michael J. Fox Show,” Mike finds out that he has to work on Christmas Eve, which complicates his plans for a gift exchange with Annie (Betsy Brandt).

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