I always wanted to know what episodes I was looking to buy, so here. Hope this helps.
Stewie Loves Lois - Lois saves Rupert and Peter gets a prostate exam.
Mother Tucker - Peter's mom starts dating TV's Tom Tucker.
Hell Comes to Quahog - Meg gets a job at a store just like "Wal-Mart."
Saving Private Brian - Stewie and Brian join the Army.
Whistle While Your Wife Works - Lois has to help an injured Peter at work. This is also the first episode with Jillian.
Prick Up Your Ears - Lois teaches sex ed at Meg's school.
Chick Cancer - Peter makes a chick-flick. Stewie and Olivia reunite.
Barely Legal - Meg falls for Brian. Peter, Quagmire, and Cleveland become policemen.
Road to Rupert - Brian and Stewie go to Aspen to save Rupert. Meg becomes Peter's personal driver.
Peter's Two Dads - Peter accidentally kills his "father" and learns that his REAL father is an Irish drunk.
The Tan Aquatic with Steve Zissou - Stewie gets his tan on. Peter becomes a bully.
Airport '07 - Peter gets Quagmire fired, so he must get him rehired.
Bill and Peter's Bogus Journey - Peter and Bill Clinton partake in shenanigans. Lois has a "meeting" with Clinton.
All good episodes, especially Whistle While Your Wife Works, Peter's Two Dad's, Tan Aquatic..., and Bill and Peter's Bogus Journey. Enjoy.