We have 3 sets - a mine, his and ours lol.

83 ART (DH's birth year and nickname) Broncos plates on his car
ELS 25 (my initials and age when I got them) Homer Simpson 'mmm...donuts' - used to be on my car
ANE 99 (our orignal 'him n me' and year we got together) Broncos plates back on my car. Had to get them re issued cos they'd been on 4 different cars so far.