The Canon point and shoot models have a few that have viewfinders, but not like your DSLRs have. The G11 has an optical viewfinder, but it does not display any shooting information, and only displays about 77% of the actual image. The larger SX20 has an electronic viewfinder, and may be closer to what you are looking for. Neither camera will be as fast in response as your DSLR, but none really are in the P&S category. There is also the small SD780 that also has a small optical viewfinder, but these types tend to be used as a last resort for pointing at the target.
You would have to move to something like the m43 cameras like the Olympus or Panasonic models to have an add-on external electronic viewfinder that might appeal to you.
Dennis