I already have done a bit of crossing of my own...

White Rhino (painkilling medical weed) x Matanuska Valley Thunderfuck (long-lasting creeper stone) = Foxy's Rhinofuck... ahhh... that feels GOOD! REally. It's great shit.

I'd love to get my hands on the Aussie Bastard Hemp, a weird mutant low-THC feral Australian hemp strain that doesn't look like cannabis, and cross it with something that's got a better potency but still can be hidden, such as Soma Rock Bud (fall foliage colors) or Ducksfoot (weird leaf shape) = Sly Bastard... plant it right on the lawn and watch the neighbor ladies ooh and ahh over your ornamental foliage plants... Problem is, the mutation in the ABH is recessive and isn't seen in F1 hybrids... that's a LONG breeding project for someone who is SERIOUSLY bored.