The starburst clock, like the deer head, shows up in numerous episodes each season. It is a visually interesting but non-distracting item for set decoration. The clock first appeared in 1.05 Bloody Mary. The clock is not limited to hotel rooms, it has also been spotted in diners, businesses, and homes.
A starburst clock appeared in the episode 1.13 Route 666. The clock differs in that it has fewer rays then the clock in the episode 1.05 Bloody Mary. The rays are also slightly wider and straighter then the original clock.
In 3.14 Long-Distance Call, Sam and Dean stay in a motel called the "Starburst Motel".
In 4.06 Yellow Fever, Dean destroys a similar looking clock but it is not the true starburst clock.