  We discuss Chandra results related to 1) cluster mergers and cold fronts and
2) interactions between relativistic plasma and hot cluster atmospheres. We
describe the properties of cold fronts using NGC1404 in the Fornax cluster and
A3667 as examples. We discuss multiple surface brightness discontinuities in
the cooling flow cluster ZW3146. We review the supersonic merger underway in
CL0657. Finally, we summarize the interaction between plasma bubbles produced
by AGN and hot gas using M87 and NGC507 as examples.
