Quick Reconnoiter
(Complete Adventurer, page 112, DnD 3.5)
[General]
You can learn a lot of information from just a quick scan of an area or object.
Prerequisite
Listen 5 ranks, Spot 5 ranks
Benefit
You can make one Spot check and one Listen check each round as a free action. You also gain a +2 bonus on initiative checks.
Normal
Using Spot or Listen in a reactive fashion is a free action, but actively trying to make a Spot check or Listen check requires a move action.