I'm a member of many of the Rootsweb listservs for this area and just stumbled across a request for an obituary look up. It made me wonder: how many can be found online? The short answer - not many. You will usually have to hire someone to do a look up for you. But online indexes can help you locate the correct newspaper and make a look up a lot easier. Here's a preview of a few sources:
1) From the JewishGen, a partial index of The Connecticut Jewish Ledger. This index is of scattered years, mostly in the 1970s and 80s: http://www.jewishgen.org/databases/USA/Connecticut.htm
2) The Ridgefield Public Library has created an index for The Ridgefield Press. They also have an organized way to look up obituaries for you: http://acorn-online.net/acornonline/obits/obindex.htm.
And always call the local library. They may be able to tell you where to find an index - before you have to pay for a researcher.