Is your life so interesting that it's worth recording all of? Alternately, are you so forgetful that you completely blank on entire conversations you had earlier that day? It sounds like you could use some technological help.
The You-Vision video glasses are glasses with a built-in camera. They've got enough battery and storage to allow you to shoot for 5 straight hours, which should be enough to capture any dinner parties you attend. Sure, they're conspicuously blocky, but it's better than the alternative of forgetting everything.