Something I've wanted for a long time is "show me the BugZilla tickets which I've looked at "recently" (last day, week, etc.). Like almost everyone else I speak to I get by saving all my bugzilla email and then doing seartches in evolution.
The url and the saved search
The search works due to two "advanced features: 1. Selecting yourself as the commentator: <field0-1-0=commenter>, <type0-1-0=equals>, and <value0-1-0=%user%> and 2. Selecting comment changes that happened after 8 days ago <field0-0-0=longdesc>, <type0-0-0=changedafter>, and <value0-0-0=8d>. The "8d" part can obviously be changed to reflect different history. To experience the feature a full working URL is: here
I also created a saved search called Commented in last 8 days. You may also want to change your column layout to include the changed time (alas. I don't know of any way to create a custom view for just a single search, *sigh*).
Bonus: search for bad attachment types
Another problem I hit a lot is that python code tracebacks in plain text, but users often leave the "crash" as the default application/octet-stream ... which means it can't be viewed. Really I'd like BugZilla to notice this, and fix it. But after seeing the above search I created: YUM* weird attachments, which searches for any BZ (belonging to the yum group) that has an attachment of type application-octet/stream that isn't obsoleted. Then it's a simple matter of manually fixing the problem bugs.