Nearly every bike manufacturer offers a line of flat-bar road bike type of hybrids like the Trek FX.

Jamis offers the Allegro line. I've ridden the 2010 Jamis Allegro 4 and it was a very nice ride.

Fuji offers the Absolute line, and those are good too, very similar in geometry to the Specialized Sirrus line of flat-bar road bikes.

Their componentry mix are near-identical to the Trek FX line for the models at various price levels; just about the only difference is the frame geometry and ride "feel."

At your local bike shop, see if you can test ride a Jamis Allegro or a Fuji Absolute. Buy the one that fits your size and riding posture the best.