OK, I'll weaken and comment on a few:-
Fred's lagoon (p73) is so 3d!
William's Eta Carina (p67) and text - for unbridled enthusiasm!
Michael's dish (p63) - for looking down rather than up!
Mike's "out of this world" smilie (p59)!
Warren's simple yet effective arrangement of Moon afocals (p43)!
Jen's purple and emoticon (p39) - for the sheer power she wields!
Vincent's Moon and planets (p32) - was a hit in the office!
Dave's Sol (p26) - for being up close and personal!
Liz's colourful gecko (p1) - and for having a beautiful image at the front of the book that represents the end of an observing/imaging night!