The MIT Technology Review lists its top 10 emerging technologies. The May 2005 list was here.
Epigenetics -detecting cancer early by monitoring subtle changes in DNA
Cognitive Radio - exploiting unused radio spectrum
Nuclear Reprogramming - a more ethical way to derive stem cells
Diffusion Tensor Imaging - for brain imaging
Universal Authentication - for a safer Internet
Nanobiomechanics - measuring tiny forces acting on cells
Comparative Interactomics - maps of body's molecular interactions
Nanomedicine -to guide drugs directly into cancer cells
Pervasive Wireless - making all wireless gadgets get along
Stretchable Silicon - teaching silicon new tricks