Powers/Abilities:
As with other Gallifreyans, the Doctor is physically superior to normal humans in nearly ever respect, though not generally superhumanly so. He is slightly stronger than his appearance would suggest, has greater stamina and better than average agility. His senses are also slightly keener than a humans, and he is capable of noticing ripples in the patterns of time. He is capable of surviving without oxygen for short periods of time, and can even survive unprotected in the vacuum of space for several minutes. Among the more obvious physical differences between his body and that of a human is that he has two hearts. He is capable of healing most wounds given time, even regrowing severed appendages on occasion (although this can take weeks). If he suffers an injury so severe that he cannot survive then he is able to completely regenerate his body, taking on a entirely new form. Doing so causes near fatal mental strain, and as a result he generally suffers a period of mental instability thereafter, which in the past has manifested as amnesia, mood swings, and even full blown psychotic episodes; in the end his mind settles down again, but in every instance his personality is altered by the experience. Perhaps due to the strain this imposes, Time Lords can only regenerate twelve times, allowing them a total of thirteen bodies.
The Doctor is moderately telepathic, another of his species' gifts. He cannot read minds, but is capable of communicating with other telepathic beings. Boosted by his TARDIS, this telepathy is able to act as an instant translator of virtually all spoken or written languages, a gift which is extended to those who travel with him; it is so effective that those using the gift are generally not even conscious of the fact that they shouldn't be able to understand the alien tongues they are listening to. Time Lords can recognise one another even when they have changed their appearances by their telepathic signature, unless one of them is deliberately masking who they are.
The Doctor's greatest ability is his intellect. He is vastly more intelligent than any human, with extensive knowledge of most sciences, and an extremely quick and adaptive mind. He is resistant to forms of mental coercion such as hypnosis, brainwashing, mind control or mind probes. Trips into his mindscape has shown that each of his earlier persona's still survives there, acting as keepers of their portions of his memories and aspects of his personality (the fifth incarnation is generally seen as the conscience of the later Doctors, for example). All incarnations of the Doctor have been seen to be skilled hypnotists too, and most have displayed a talent for disguise and mimicry.
The Doctor is a brilliant engineer, well known for his ability to build a device for any circumstances he encounters. He often jury-rigs temporary equipment to combat the evils he comes across if what he needs is not to hand. His most common tool (other than his TARDIS) is the sonic screwdriver, which can be adapted to a number of uses, most commonly to open locked doors of all varieties. It has also been seen to remotely detonate mines and swamp gas, to repel creatures with sensitive hearing, and even to remove screws. The Doctor stores a variety of useful objects in his pockets, which he has finally admitted have an extra dimension sewn into them, making them much bigger on the inside.
Each version of the Doctor has certain abilities and skills peculiar only to that regeneration. The third was a master of unarmed combat, in particular Venusian Aikido, a talent he achieved without any training. The seventh could disrupt the brain's electrons with a touch, allowing him to render people unconscious. The eighth has the ability to read the patterns of time, allowing him to pull out hints about a person's past or future from their timeline.
While the Doctor normally disdains physical violence, he has shown himself in the past to be a skilled swordsman (at least from his fourth incarnation on), having been trained by one of Cleopatra's guards. He is an expert with a crossbow (trained with William Tell), and even his first, elderly form was an able fighter, having learned wrestling from the Mountain Mauler of Montana.