Music:
Shen Persian alternative
Minus1Iranian rock
Abjeez Persian alternative world/pop
SoulNidus Iranian rock
Hich kas Persian hiphop
Agah bahari Iranian prog/rock
Pishro Persian hiphop
Reveal hiphop
Ohum Persian rock
Tarantist Iranian heavy metal
Sarakhs Persian alternative rock
Hypernova Iranian alternative rock
Farzad Golpayegani Iranian prog/rock
Fanoos Persian pop/rock
Ahoora Iranian heavy metal
Niyaz World music
Rana Farhan Persian jazz
Kiosk Persian pop/rock

Art:
Farangis idelchi Art
parkingallery Iranian Contemporary Art

My Favorite general links:
zirzamin Iranian Contemporary Art and Alternative Music
tehranavenue Iranian Contemporary Art and Culture
Tehran 24 Photography
khiyaboon Persian Hip-hop
7sang Iranian Contemporary Art and Culture
culture-music Iranian Cultural and Music Magazine