Jason Segel is 6'4" tall. (Jewdar: cold)

Jason Segel helped his high school to a state basketball championship. (Jewdar: colder)

Jason Segel went to Catholic school. (Jewdar: freezing)

Jason Segel's last name is Segel, a traditional Jewish name. (Jewdar: still cold)

Jason Segel is part of the very-Jewish Judd Apatow crew: Paul Rudd, Seth Rogen, etc. (Jewdar: warming up)

Jason Segel is pretty damn funny. (Jewdar: warmer)

Jason Segel has a Jewish father and a non-Jewish mother. (Jewdar: holding)

Jason Segel was bar mitzvahed. (Jewdar: heating up)

Jason Segel considers himself a Jew. (Jewdar: ON FIRE!)