American Dad: “The Scarlett Getter”

Last week, I talked about all the ingredients that went into making a great American Dad episode. Solid guest stars, use each of the main characters, keep the laughs coming. It was effective and true last week, so I have no regrets, except for the minor one that it probably would have been better for me to save it for this episode, probably my favorite since I started reviewing the show. Because it does everything I talked about last week, and might even have done it slightly better.
In the main plot, the CIA hires an alien bounty hunter to capture the rogue alien (Roger), and Stan finds that his former massive crush from CIA boot camp is in town. He tries to drop everything in order to rekindle his old crush, which turns Stan into the gibbering fool that he's perhaps best when he's doing. Francine can't help but notice, so she gets righteously angry, another excellent realm for that character. She recruits Roger to get into the character of Dan Handsome, who will sweep Stan's old crush Scarlett of her feet. So we get in-character, sexual Roger, who is directly competing with Stan, another premise filled with excellence.
Perhaps the most surprising thing about “The Scarlett Getter” is that the big guest star, Shannon Sharpe, fit in perfectly. There was an initial awkward “The football guy Shannon Sharpe???” which turned into a horrific pun joke, but overall, the extroverted Sharpe made perfect sense for a ridiculous alien bounty hunter, and made it work.
The B-plot brought in the other main characters. Steve accidentally puts on a pair of Hayley's underwear that, alongside Klaus, he determines gives him good luck throughout the day. This works well for Steve until Snot steals it. Hayley, in her best (only?) moment of the series, explains the power of the placebo effect to Steve using a Smurfs reference…and then goes to beat the shit out of Snot and take her lucky underwear back.