30 Rock: 2x12 - Subway Hero

• Liz's ex, Dennis, gets 15 minutes of fame when he saves a stranger from being killed by a subway train
• Dennis proposes to Liz; Liz says no
• Kenneth gives a studio tour to a TV star from the 1940-1950s who tells Kenneth messed up stories about the good old days
  
• Jack and Richard Nixon's ghost convince Tracy to be a spokesperson for the Republican party