In comparison to Max Martin, Luke is far more findable on the internet. As already mentioned he’s got a myspace-page and a website which is, uhm, “under construction” for months already. Nevertheless the person and his achievements in pop music are topics of this post, not his unfinished website. So, here we go again with the introduction of his Wikipedia-article:

Dr. Luke, also known as Doctor Luke, Luke Gottwald, Lukasz Gottwald, ([*26. September 1973, New York City] birth name Lukasz Sebastian Gottwald) is a musician, songwriter and producer who has written and produced for artists such as Britney Spears, Kelly Clarkson, Jibbs, Lady Sovereign, Kelis, Avril Lavigne, Leona Lewis, Missy Elliott, Pink, Lil’ Mama, Katy Perry, Mos Def, the Backstreet Boys, Daughtry, The Veronicas, Carlos Santana, Vanessa Hudgens, and the Sugababes. Dr. Luke was the guitar player in the Saturday Night Live Band for ten seasons (ten years), leaving the band at the end of the 2006-2007 season.
He is known for writing heavy pop-rock songs and occasionally hints on taboo subjects.

Again, this is actually what you need to know about him. Although “Lukasz” sounds non-american, he was born and raised in NYC, yet the name is polish. He started with playing drums at the age of 12 and switched afterwards to guitar after having listened to his sister playing Ziggy Stardust. He then practiced to play guitar. His first solo was “You Shook Me All Night Long” by AC/DC. He learned punk/rock-songs from The Clash, Sex Pistols, Cars, Led Zep, Bowie, Jimmy H, Eddie V, Steve Vai… He was obsessed with it:

“I was already playing and doing sessions before I went to school.” ~Lukasz Gottwald

He then decided to go to the Manhattan School of Music (MSM) to learn jazz, although he didn’t know how to play it. So, the teachers depreciated him at first. He knew he had great guitar skills but unfortunately not the requested jazz knowledge. So he swotted till he was able to show off and “kick all their asses”.

Lukasz Dr. Luke Gottwald at SNL - Copyright by SNL; I don't own the picture - no Copyright-infringement

“So I guess Manhattan School was good and bad: Good because I learned to play music I didn’t know how to play, bad because they didn’t respect any other kind of music and were super close-minded.” ~Lukasz Gottwald

I couldn’t find anything about how he got to SNL, yet I noticed while researching (“researching”=”googling”) that Google also googles for “Saturday Night Life” when you just enter “SNL” and it googles for “New York” when you enter “NYC”! Apparently Google is getting intelligent.
Nevertheless I found articles on gossip sites which accuse Luke of having stolen from songs for Avril Lavigne’s “Girlfriend”, but read Jig’s comment on this at first: She (or he?) has very conclusive arguments that this gossip is nothing more than gossip!

“tyhtka” – WTF!

UPDATE: In Jig’s other comment you can read how he got to Saturday Night Life: “He got onto SNL by being auditioned, like anybody else would. He was recommended by some of his former teachers as a prospect. He was surprised that he was chosen since he knew most of the NYC guitar players and there were some that he thought were technically superior to him. He asked why he was chosen and they said that it was because he was photogenic, had a stage presence, and was also qualified musically.”