Lenovo shows their ThinkCentre Edge 91z All-in-One PC. The Edge 91z is an all-in-one that is aimed more at corporations than for home entertainment. The screen is 21.5 inches measured diagonally and the actual system itself is only 2.5 inches thick. The wireless keyboard is spill resistant. There is an 80 GB solid state drive and 8 GB of DDR3 memory. The Edge 91z should be available for under $700.