insects are a great alternative to meat.
Though I wont eat roach or moths and such, but i have tried grasshopper (tails only, baked); which tastes like dry chicken, and worm (a special jungle variety that the amazon indians consume on a daily basis... it was smoke-baked, kinda like the smoked salmon) which tasted like boiled egg with a drop of A1 sauce (im serious).
The protein found in a single insect is found in 1/2 a pound of meat.