Currently, the only odds I've seen offered are for the following Welterweight fight:

BJ Penn +155
VS.
Matt Hughes -185

The last time these two fought, Penn pulled off an incredible upset. Since then, Hughes has been a dominant force in MMA, while Penn has been somewhat under the radar (mainly due to his not fighting in the UFC for some time).

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"You gonna bark all day, little doggie, or are you gonna bite?" - Mr. Blonde from Reservoir Dogs

This was a close fight for the first two rounds, with Penn getting the upper hand. Penn gassed towards the end of Round 2 trying to tap out Hughes. In Round 3, Hughes took control and started landing punches at will. The ref was forced to stop the fight.

__________________
"You gonna bark all day, little doggie, or are you gonna bite?" - Mr. Blonde from Reservoir Dogs