A Fistful of Datas

“Alexander convinces his father, Worf, to accompany him on a trip to the “ancient west” on the holodeck. Worf reluctantly plays the part of sheriff in the town of Deadwood. Alexander is his deputy, and Troi plays “the mysterious stranger”.

Meanwhile, Data and Geordi experiment with using Data’s brain as a backup for the Enterprise’s computer. A seemingly small malfunction occurs. Soon, Data’s programming begins to take over parts of the Enterprise’s computer – Data’s cat food (for Spot) appears when food is ordered from the replicators, and Picard’s music is overwritten by Data’s.”

- Wikipedia.