Paul Kalkbrenner is one of my favourite DJs and he not also scored this little movie but also played the main character Ickarus, whose life and career is threatened by drug-abuse and his excessive lifestyle.
Soon, after a serious overdose he's transferred into a rehab clinic and from thereone the film follows the path of a plethora of other movies like One Flew Over the Cuckoo's Nest for example.
Kalkbrenner is no Jack Nicholson though, and as many other musicians turned actor his acting is flawed but he has undeniable talent and screen presence. He even outplayed some of the professional actors in supporting roles like Rita Lengyel who plays his girlfriend/manager.
As much as Kalkbrenner is no Nicholson, Berlin Calling is no OFOTCN but it has great music and depicts the DJ scene and nightlife of Berlin with sincere honesty.
It condemns drug abuse and shows what it leads to (although some of the clinic scenes are a bit manipulative) and considering the huge following within the club scene and especially the youth it has some educational value as well (Ickarus only reestablishes himself in the music scene when he becomes sober again and dedicates his life to music instead of drugs)
I don't know if this little flick even got a release in other markets than the German-speaking countries but for all fans of electronic music, and some more, this will most likely entertain you.
PS: Noone beats German directors when it comes to club scenes (or raves for that matter). They apply a certain style which not even polished music video directors can beat.