The "I was bor...or...ornnnnnn... with a heart of Lothian!" section of Heart of Lothian.
The "Why don't you touch me, touch me, touch me now, now, now, now, NOW!!!!" part of the Musical Box, especially the version on Seconds Out where Phil extends the last "now!".
The entire medley part of the "In The Cage" medley from the original album of Three Sides Live (the video version is not the same night), especially when Phil and Chester are trading Phils (see what I did there?) like madmen.
The keyboard solo in "Bedshaped" by Keane. Tell me that Tim Rice-Oxley doesn't worship at the altar of Tony Banks!