I didn't do an official 'crash course' as such but i always knew that i wanted my license as soon as possible.
I just called a local driving instructor and told him i wanted a lot of lessons and wanted to get it over pretty quick and he was happy with that.
Had my first lesson on april 5th (2006 that is, my birthday), had my theory on the 7th, had another 16hours of lessons (about 10 lessons), found a cancellation date on the 21st and lucked out and got it first time.
It was pretty fun having my license way before all my friends and passing so quick but would i ever do it again? Definitely not.
It gave me little confidence on the road (as i was driving my own car the day after i passed on my own) and i never felt safe until at least a month or so driving and even then i wasn't exactly experienced.
I actually wish i took more lessons, i didn't want to pass to get from a to b. I am/was totally interested in cars, professionally resprayed one, tuned and rebuilt two 'ground up' and am very interested in the theory of driving, the racing line, excessive oversteer etc. Now that i've learnt to drive too soon i doubt i'll ever have perfect technique due to not having a great base to begin with (learning to drive with regard to awarness etc). I'm now going to take some advanced driving lessons (preferably at the track) to increase my skill.
I don't think you'll ever be a 'great/vgood' driver from learning in a week, average at best. If you do no other driving training after this then i wouldnt want to be near you in a car in the rain.
Now that i'm a year and a half onwards i feel compltely confident as a driver in any fwd/rwd car and more-so than any of my friends of the same age but i think that's solely due to my interest of cars and respect for them. Learning to drive that quick did me more bad then good. Was fun at the time of course though.
p.s i did do a pass plus and didnt feel like it helped at all.