If Apple is really looking to buy a big company, I would guess they wouldn't buy anyone that killed agreements with other media or network companies (Sprint at $7.3b market cap(1) for example).
AMD/ATI might be nice at $5b would be good for the chip tech, but would probably have serious problems with Intel and a lot of PC industry. NVIDIA at $9 would be interesting.
Adobe at $16b has been a rumor favorite. It would probably be a buy-it and then spin off / sell a lot of the enterprise facing parts to someone else.
AMD/ATI might be nice at $5b would be good for the chip tech, but would probably have serious problems with Intel and a lot of PC industry. NVIDIA at $9 would be interesting.
Adobe at $16b has been a rumor favorite. It would probably be a buy-it and then spin off / sell a lot of the enterprise facing parts to someone else.
1) expect to pay a premium over cap