Naxx:

Arachnid Quarter 

 1. AnubRekhan 
http://www.wowwiki.com/AnubRekhan
https://www.youtube.com/watch?v=g47oN5snpSU

 2. Grand Widow Faerlina 
http://www.wowwiki.com/Grand_Widow_Faerlina
https://www.youtube.com/watch?v=62b9SxkjRxI

 3. Maexxna 
http://www.wowwiki.com/Maexxna
https://www.youtube.com/watch?v=-JQSBWL2PAI

 Plague Quarter 

 4. Noth the Plaguebringer 
http://www.wowwiki.com/Noth_the_Plaguebringer
https://www.youtube.com/watch?v=U0j2mVhtoN0

 5. Heigan the Unclean 
http://www.wowwiki.com/Heigan_the_Unclean
https://www.youtube.com/watch?v=VUlliMso570

 6. Loatheb 
http://www.wowwiki.com/Loatheb
https://www.youtube.com/watch?v=8rVGUKVI4WA

 Military Quarter 

 7. Instructor Razuvious 
http://www.wowwiki.com/Instructor_Razuvious
https://www.youtube.com/watch?v=8elL14VTND8
https://www.youtube.com/watch?v=bUlpLLDnDb8 - 25man priest nelkul!

 8. Gothik the Harvester 
http://www.wowwiki.com/Gothik_the_Harvester
https://www.youtube.com/watch?v=-nNALppyd1E

 9. The Four Horsemen 
http://www.wowwiki.com/Four_Horsemen
https://www.youtube.com/watch?v=5rD8_cokwUQ

 Construct Quarter 

 10. Patchwerk 
http://www.wowwiki.com/Patchwerk
https://www.youtube.com/watch?v=5FCj6PQmQSc

 11. Grobbulus 
http://www.wowwiki.com/Grobbulus
https://www.youtube.com/watch?v=w_otIOymgUs

 12. Gluth 
http://www.wowwiki.com/Gluth
https://www.youtube.com/watch?v=2SOAxujWmUs

 13. Thaddius 
http://www.wowwiki.com/Thaddius
https://www.youtube.com/watch?v=L7YR3UPlec8