Integral batteries make it awkward.
Petzl Tikka XP: spot beam with diffuser, 35 lumen on boost, 3 lower levels
Zebralight H30 or H50: wide-angle beam, 80/66 lumen on high.
Or there's stuff from Dealextreme, which is often a case of order and see what you get.
eg
3xAAA 3W/1W,
100 lumen rechargeableAccording to the reviews that get posted, a lot of these lights aren't nearly as bright as the specs would have you believe.
If a torch side-mounted on a
headband will do, the
Fenix E20 is pretty bright (109 lumen and focusable.
If you would accept a remote battery pack (in a pocket) there is much more choice, with a Petzl Myo XP belt the most obvious, going all the way up to a Lupine Betty with small battery and headmount kit.