Since I have my fermenters busy at work and don't need to brew more beer right now, but I need to do something to scratch my itch to grow yeast (ok.. another way to say I Gotta brew something even if its just a starter). I'm looking to culture some commercially available yeast to have on hand and was looking for some suggestions of favorite yeasts to keep on hand for inspiring future brews. What commercially available strains do you like to culture and have available?