Can anyone suggest me good psychedelic and avant-garde black metal bands?

I only know Oranssi Pazuzu, The meads of asphodel, A forest of stars, Hail spirit noir, This is past and Nachtmystium.

Thanks and cheers...

try this band - Amesoeurs.

already heard them..thanks anyway...

Have you heard Vediog Svaor?

http://www.youtube.com/watch?v=dBix2HruvI4

http://www.metal-archives.com/bands/Vediog_Svaor/14030

Thanks a lot Lustre666......loved the song...plz suggest me more bands like these....

How about Aluk Todolo?

haven't heard them...but their discography is already there in my downloading list.......thanks...

Terra Tenebrosa's V.I.T.R.I.O.L.- Purging the tunnels.

I recently started listening to Bosse de Nage - might be what you're looking for.
And you probably know of Nachtmystium.

Try:

SOLEFALD - http://www.metal-archives.com/bands/Solefald/50

ULVER - http://www.metal-archives.com/bands/Ulver/1208

VED BUENS ENDE - http://www.metal-archives.com/bands/Ved_Buens_Ende/888

ARCTURUS - http://www.metal-archives.com/bands/Arcturus/292

IHSAHN - http://www.metal-archives.com/bands/Ihsahn/60496