I frequently find myself adding Ids to the SOQL editor. Like "and OwnerId = '0050000000xxxxx'" with my user id to tell it I only want records that I own.
It would be a nice feature (not huge but nice) if I could put "and OwnerId = :userId" or something similar and have TWS replace that with whatever the current user Id is before it sends the SOQL off to Salesforce.