There's nothing like a good music documentary, especially those that have philosophical attributes and spark introspection as well as beneficial dialogue with other lovers of music.  Here are some docs that do just that most are free to stream online or Netflix, a few you have to shell out some change.

What Difference Does It Make?: A Film About Making Music (2014)

Directed by: Ralf Schmerberg
Written by: Ralf Schmerberg & Easton West
Includes: Rakim, Erykah Badu, Q-Tip, Brian Eno, Lee 'Scratch' Perry, Philip Glass, Nile Rodgers, Thundercat & more

The Art of 16 Bars: Get Ya Bars Up (2005)

Directed by: Peter Spirer,                                                                                                            Written by: Iain Kennedy & Peter Spirer                                                                                  Includes: Rakim, Talib Kweli, KRS-One, Kool Moe Dee, Method Man, MC Lyte, Jadakiss, Jay-Z, Kanye West & more

Money, Power, Respect: Hip Hop Billion Dollar Industry (2012)

Written by: Arnaud Fraisse 
Directed by: Gaël Cabouat 
Includes: 50 Cent, Sean Combs, Dr. Dre, Jay-Z, Chris Lighty, RZA, Kevin Liles ,Kim Osorio, Steve Stoute and more.

What Ever Happened to Hip Hop? (2009)

Written & Directed by: Sonali Aggarwal
Includes: Afrika Bambaataa, George Clinton, Slick Rick, Kool Keith, KRS-One, MC Lyte, Jean Grae, Nikki Giovanni, Rhymefest, Busy Bee, Ceeknowledge & more

Hip-Hop: Beyond Beats and Rhymes (2006)

Written & Directed by: Byron Hurt
Includes: Chuck D., Del La Soul, Mos Def, Jadakiss, Fat Joe, Michael Eric Dyson, Sarah Jones & more

Mixtape Inc. (2007)

Directed by: Walter Bell
Includes: Chuck D., Kanye West, Lil' Jon, G-Unit, Lloyd Banks, Young Buck, Xzibit, T.I.,  Fabolous, David Banner, Joe Budden, DJ Kay Slay, DJ Clue?, DJ Green Lantern, Danger Mouse, Kool DJ Red Alert, DJ Ron G., World Famous Brucie B., DJ Enuff & more

If you weren't able to catch this on Netflix or Hulu when it was free you can check it out below on YouTube via CODEBLACK OnDemand for $0.99 

Hip Hop: The Furious Force of Rhymes (2011)

Written & Directed by: Joshua Litle
Includes: Grandmaster Caz, Davey D, Lord Jamar, Toni Blackman, Montana Beats, G-Town, Busy Bee & more

The MC: Why We Do It (2005)

Directed by: Peter Spirer
Written by: Iain Kennedy & Peter Spirer
Includes: Rakim, Talib Kweli, KRS-One, Method Man, Raekwon, Ghostface Killah, Common, Twista, Kanye West, 50 Cent, Mekhi Phifer & more

Beats, Rhymes & Life: The Travels of A Tribe Called Quest (2011)

Written & Directed by: Michael Rapaport
Includes: Q-Tip, Phife Dog, Ali Shaheed Muhammad, Jarobi White, Ad-Rock, MCA, Questlove, Angie Martinez, Barry Weiss, Chris Lighty, Ludacris & more

Crackle has this awesome film available to watch on YouTube for $9.99. Check it out below.

The (R)evolution of Immortal Technique (2011)

Directed by: Cary Stuart
Includes: Immortal Technique, Chuck D., Cornel West, Ice-T, Pam Africa, DJ Green Lantern, Poison Pen, Woody Harrelson & more

Sample This (2012)

Written & Directed by: Dan Forrer
Includes: Gene Simmons, Questlove, Grandmaster Caz, Freda Payne, Jerry Butler, King Errisson, Melle Mel, Afrika Bambaataa, Kool Herc, Rock Steady Crew & more

Godigital has made this movie available on YouTube for $3.99. Check it out below.

Nerdcore Rising (2008)

Directed by: Negin Farsad & Kim Gatewood
Includes: MC Frontalot, Beefy, J-Live, Prince Paul, Weird Al Yankovic & more

View on Netflix (while available) or Cinedigm has made this interesting film available to watch on YouTube for $2.99. Check it out below.

I Want My Name Back (2011)

Directed by: Roger Paradiso
Includes: Master Gee, Wonder Mike, Big Bank Hank, Grandmaster Caz & more

View on Netflix (while available) or Imagestore has this doc available to watch on YouTube for $3.99. Check it out below.

Searching For Sugar Man (2012)

Directed by: Malik Bendjelloul
Written by: Malik Bendjelloul & Stephan 'Sugar' Segerman

Sony Pictures Home Entertainment has this great movie available to watch on YouTube for $12.99. Check it out below.

Marvin Gaye What's Going On The Life and Death of Marvin Gaye (2005)

Directed by: Jeremy Marre

Marley (2012)

Directed by: Kevin Macdonald
Includes: Bob Marley, Ziggy Marley, Lee 'Scratch' Perry, Rita Marley, Cedella Marley, Jimmy Cliff & more

View on Netflix (while available) or Magnolia Pictures VOD has this gem available to watch on YouTube for $2.99. Check it out below.

The Art of Rap (2012)

Directed by: Ice-T
Includes: Mos Def, KRS-One, MC Lyte, Kool Keith, Big Daddy Kane, Lord Jamar, Dug E. Fresh,  Marley Marl, Run DMC, Melle Mell, Kool Moe Dee, Nas, DJ Premier, Q-Tip, Rakim, Method Man, Redman, Raekwon, Common, Immortal Technique, Bun B & more

View on Netflix (while available) or Vivendi Entertainment has made it available to watch on  YouTube for $2.99. Check it out below.