It became big in the 90's with the rave culture.
There are many differing styles, some more slower and ambient forms are common place on tv ad's and commercials, and is often heard in the background.
It is now more known to be a more intellectual form of electronic music thats deep and meaningful compared to other forms of (modern dance) music. The faster (140bpm+) style obviously attracted the club culture, but the more diverse sub-genres can include jazz,reggae,latin,hiphop or samba vibes.
More recent chart D&B success includes DJ Marky & XS, Jaimeson, and Puretone.
The 90's saw the Prodigy with "charly" become a supreme example of DnB.
This genre is still relativley underground, which is probably the best place for it. It can be a rather explicit form of music, that suits the youth of today and their life style.
Intelligent or Atmospheric
Probably one of the most carefully structured and best produced music in the modern world. Many people say that the "drum and bass effect" gives off pleasurable feelings of past blissful memories, makes users somewhat look forward to the future, dear memories of love and passionate relationships, giving off a somewhat uplifting feeling to particular users, who have a bit more of an artistic influence and background, and who dont enjoy the musical rape of 50 cent and other "big" rnb , mainstream hip-hop artists.
In conclusion: Drum and bass has come a long way, affecting millions of listeners throughout the globe, it hasn't even started to spread its sphere of influence. People who have hearts, people who think twice and people who actually know what music productions is mostly about. All in all bless the bassheads.
drum and bass is heard live via a dj who spins original tracks and remixes by producers, sometimes an MC is also present to hype the crowd up.