Hardware Acccelerators
I'd say one of the big deals this year was hardware acceleration. Although a lot of the stuff has been about for a few years, and acceleration was a big deal in the 80's this second generation of accelerators is going to be really interesting.
I'm thinking Nvidia and CUDA, ATI and stream computing, IBM Cell, Xilinx V5's integrated to Intel's FSB, Clearspeed Advance, Xmos, That mad 64 core thingy (Tilera or something), etc etc
These were technologies that weren't getting a huge deal of press a year ago but now are getting talked about everywhere you go.