The YTV Achievement Awards aired on YTV annually (except 1991) from 1989 to 2000. There are some clips and 2 full shows available online, but that leaves a lot unavailable. Here's a quick summary of what I've found and what is missing.
YTV Achievement Awards - November 3 1989 The 2nd Annual YTV Achievement Awards - November 2 1990 Marc Kielburger, Barenaked Ladies, The 3rd Annual YTV Achievement Awards - March 13, 1992 The 4th Annual YTV Achievement Awards - April 22, 1993 The 5th Annual YTV Achievement Awards (YAA!) - April 16 1994 Weird Al & Tarzan Dan clips The 6th Annual YTV Achievement Awards (YAA!) - April 8 1995 The 7th Annual YTV Achievement Awards (YAA!) - April 28 1996 Gods of Rhythm, Plumtree , Plumtree - Behind The Scenes The 8th Annual YTV Achievement Awards (YAA!) - April 27 1997 Full show! The 9th Annual YTV Achievement Awards (YAA!) - April 19 1998 Full show! The 10th Annual YTV Achievement Awards (YAA!) - June 6, 1999 Opening, Fuzzpaws, New Addams Family/acting, Ben Savage and Danielle Fischel, The 11th Annual YTV Achievement Awards (YAA!) - May 28 2000