If you're looking to create a sense of atmosphere in a portrait photograph, an effective option can be to add smoke, mist or dust in combination with directional lighting. The results can be great. Check out some of these great examples and share your own efforts in the comments section!
Adobe Apple Canon Casio Cokin Fujifilm Hasselblad Holga Kenko Kodak Leica Lensbaby Lytro Mamiya Nikon Olympus Panasonic Pentax Phase One Polaroid Profoto Ricoh Samsung Samyang Sigma Singh-Ray Sony Tamron Tiffen Tokina Vivitar Yongnuo Zeiss Zenit
Awesome pictures! Here is one I took at a concert
great examples! Thanks!