Coming off of their shutout of the Browns in Cleveland, the Bengals returned home for a Thursday night fight in an AFC North rematch against the Ravens.  After a scoreless first quarter, kicker Shayne Graham scored on 23- and 27-yard field goals, which gave the Bengals the lead at halftime. In the third quarter, the Bengals added onto their lead when quarterback Carson Palmer completed a 40-yard touchdown pass to wide receiver T. J. Houshmandzadeh on a flea flicker.  In the fourth quarter, the Ravens attempted a late comeback. Quarterback Steve McNair completed a 36-yard touchdown pass to wide receiver Derrick Mason, but the Bengals squashed Baltimore's comeback, by recovering the Ravens' onside kick.  With the win, the Bengals improved to 7-5. Deltha O'Neal became the 8th Bengal since the 2005 - 2006 season to be arrested. He was charged with drunk driving. O'Neal was listed as "inactive" for the upcoming Raiders game.
Question: Who threw the first touchdown pass of the game?
Answer: Carson Palmer