Hope you don't mind cut and paste...
"'Ive seen ones with big ol' ape hangers that look like Peter Fonda should be pedaling them." That would be a Long Wheel Base (LWB) with Above Seat Steering (ASS)
"Ive seen one's where the handlebars are under the seat" Under seat steering (USS) Both Short Wheel Base (SWB) and LWB bikes can be set up with USS
"I've also seen trikes with two wheels out front and one in back (way cool)" A Tad-Pole trike, check out Greenspeed for more info.
"I haven't seen any with suspension, nor off-road bikes." You can get both, do a search for mountain quad a four wheel off road recumbent. Or check out Burley for suspension bents.
"Are there any that would fit me?" Yes, many builders offer larger frames if needed.
For more info check out Recumbents.com
"When the spirits are low, when the day appears dark, when work becomes monotonous, when hope hardly seems worth having, just mount a bicycle and go out for a spin down the road, without thought on anything but the ride you are taking." - Arthur Conan Doyle