My husband is not a pony fan, but he does tell my daughters that his favourite is Rainbow Dash (thats G3, not G4 oddly enough) and he has just finished building a big shelving unit in my daughter's room for our family collection. He knows I am not into things that most women my age are into, but he doesn't care. He also likes the fact that we can find ponies at thrift stores for next to nothing
a lot cheaper than most toys these days....