"In Your Eyes". How can anyone NOT have included this? This is one of his best songs! And the LYRICS are so good too.
"Sledgehammer", which in addition to being an awesome song, has an equally awesome and innovative music video that is a serious contender with Michael Jackson's "Thriller" for best music video of all time.
"Red Rain" from the same album is also incredibly epic. Actually, So is basically a Crowning Album Of Awesome as a whole.
"Here Comes The Flood", specifically the stripped-down, piano-only version; Gabriel was dissatisfied with the bombastic, overdone original on Car and reworked it into an absolutely beautiful song.
"Walk Through The Fire", an awesome track from the otherwise forgettable Jeff Bridges movie Against All Odds (which also had Phil Collins on the soundtrack, whose eponymous song became a hit).