Jeopardy is testing a concept.  Well not quite a concept.

Jeopardy is testing a massively parallel algorithm.

They have matched Ken Jennings and Brad (someone or the other)

against an IBM algorithm.

 After day 1  Ken is at 2000 Brad and the computer are at 5 K.

The computer has problems parsing the meanings of words but is doing pretty well with  normal memory stuff.

Boy if a computer can replace Ken the rest of us are in trouble.

Information on Watson

Day 2- Watson Cleaned up- apparently human reflexes are insufficient to beat a computer.  Who knew?  The only time Ken and Brad had a chance was when the computer didn't buzz in.