I like Spencer's willingness to make unusual conclusions and use uncommon methods to solve a case. In one episode for example, Spencer stated that the cause of death for one victim was a T-Rex. As it turns out, the victim was pushed into the teeth of T-Rex fossil he had just discovered.
Spencer also dealt with a case with a missing mummy from a museum. He concluded that the mummy simply "walked" out of the museum. Much to everyone's surprise, someone had swapped the real mummy with himself and walked out after the museum closed.
Shawn Spencer inspires me to accept every possible solution to a problem no matter how silly that solution may be.