Best Mixed Blessing Curses

[Fable Wright]

As the title says, I'm looking for Bestow Curse effects that could be used by creative players to their benefit. Note that I'm not really looking for strictly beneficial effects, or ones that have a small downside tacked on for larger benefits. Some examples of what I mean:

The cursed can only ever draw the weapon they're holding right now. If they ever try to pick up another weapon, they instead pick up their sword (even if it's not in reach) and leave the other weapon on the ground.
Any metal touching the character's flesh is affected as by a Heat Metal effect.
When the target sleeps, his skin walks off on its own, as per the Skinsend (http://www.d20pfsrd.com/magic/all-spells/s/skinsend) spell. When they dismiss the spell effect, they wake up. (This means that they wake up with 1/2 their hit points every time they fall asleep, and don't heal hit points with a good night's sleep.)
The target treats wood as though it were completely transparent. (Walk into walls. A lot.)


Anyone else have ideas?

[The Mentalist]

Can't feel fire: Perhaps immunity or half damage from flame but issues with hypothermia in winter.
Plants wither at touch: Touch attack to damage plant creatures, immune to entangle. Farmers don't care for him too much.

[Pseudo_Nym]

-Your weapon welds itself to your hand (but you can't be disarmed).

-You constantly feel like you're in an uncomfortably warm room (better than freezing to death).

-You cannot intentionally decieve others (so everyone who's in the know can trust you).

-Any food your hands touch becomes poisoned (need gloves to eat, but you can poison others pretty easily).

-Every few minutes, you teleport to a random empty space within 30 feet (annoying, sure, but hard to keep you imprisoned).

-No one within five feet of you can resist the urge to punch you in the face (including enemy spellcasters).

-You gain spell resistance (perhaps too nasty).

[Fable Wright]

Some more:
Everyone but the person you're talking to hears you. (You can shout at a person, but they will not hear it; meanwhile, everyone else within 20ft hears you perfectly.)

You and all of your possessions catch fire when in the presence of a prominently displayed holy symbol. (Flaming sword, free torches. On the other hand, everything must be fireproofed.)

[limejuicepowder]

-The character is instantly forgotten when they leave line of sight. All interactions, good or bad, are erased from the memory of anyone who can't see the character.

-The character's voice triggers an AoE shatter effect, centered on the character, whenever they speak.

-The character continually shoots searing light spells out of their eyes, only stopping if their eyes are closed or they wear rose-quartz glasses.

[Fouredged Sword]

You can never find rest on the ground. You must find a place to sleep standing or some other way, but you can't be tripped.