help with a song title or artist

[Cameron MacLean]

Help!   Nicole and I are MC'ing a wedding this weekend, and we are trying to get a song for a slideshow.  i need help identifying either the artist, or song title, or anything!   All we have to go on is that the song we are trying to get is from a currently running CIBC commerical on TV, where a family moves house, and the woman is lamenting having to leave the old house, as she is looking at the doorframe where her children's heights are recorded.  When they get to the new house, her husband has already had that doorframe installed (from the old house).   the song has a catchy chorus, and the lyrics go:   "i-i-i...want to thank you.......for giving me the best day-ays of my life..."   If you've got any idears at all, please help!   thanks (this is a long shot, I know)   ..Cameron