Im personally on the 'fence' but I can confirm that Ekman is featured in psychINFO. If you don't know what this is, you shouldn't be commenting.
If anyone is interested looking up the research, as I am (i must be bored), from what I can see, Ekmans most cited contributions are:
(289 citations) Who can catch a liar? American Psychologist, Vol 46(9), Sep, 1991. pp. 913-920.
(131 citations) A few can catch a liar. Psychological Science, Vol 10(3), May, 1999. pp. 263-266.
(117 citations) The ability to detect deceit generalizes across different types of high-stake lies, Journal of Personality and Social Psychology, Vol 72(6), Jun, 1997. pp. 1429-1439.
There may be others, but these papers seem like the big tickets. Haven't looked up METT though.
Of course, I have also come across published criticism's. Anyhoo, whatever you do, please don't argue a point (for or against) based on wikipedia!
Have fun!
ps psyborgue, you probably didnt find anything, cause you spelt his name wrong
