Attached Link: Mojodallas' ShareCG portfolio

Mojodallas is in the process of converting the Carnegie Mellon BVH library into Poser friendly versions. He's still uploading, but set 5 looks like a good starting point:

05_02 dance - expressive arms, pirouette
05_03 dance - sideways arabesque, turn step, folding arms
05_04 dance - sideways arabesque, folding arms, bending back
05_05 dance - quasi-cou-de-pied, raised leg above hip-height, jete en tourant
05_06 dance - cartwheel-like start, pirouettes, jete
05_07 dance - small jetes, attitude/arabesque, shifted-axis pirouette, turn
05_08 dance - rond de jambe in the air, jete, turn
05_09 dance - glissade devant, glissade derriere, attitude/arabesque
05_10 dance - glissade devant, glissade derriere, attitude/arabesque
05_11 dance - sideways steps, pirouette
05_12 dance - arms held high, pointe tendue a terre, upper body rotation
05_13 dance - small jetes, pirouette
05_14 dance - retire derriere, attitude/arabesque
05_15 dance - retire derriere, attitude/arabesque
05_16 dance - coupe dessous, jete en tourant
05_17 dance - coupe dessous, grand jete en tourant
05_18 dance - attitude/arabesque, jete en tourant, bending back
05_19 dance - attitude/arabesque, jete en tourant, bending back
05_20 dance - attitude/arabesque, jete en tourant, bending back

There's a complete index list in each download, so you can easily find more.