What standard should I follow when naming tables and views? What standard should I follow when naming tables and views? For instance, is it a good idea to put something like tbl_ at the beginning of table names? Should I designate code/lookup tables in some way like ct_, lut_, or codes_? Are there any other do's/don'ts?

I'm using MS SQL Server and have many databases with many tables so it would be nice to have something we can use as a standard with some supporting rational.
OK, first NEVER put tbl in front of a table's name.  It's a table, we already now that.  That's called Hungarian Notation, and people stopped doing that 5+ years ago.

Just call the object based on what it is.  If a table holds employee data call it "Employee".  If it holds information about computers call it "Computer".  If it maps computers to employees call it "EmployeeComputer" or "ComputerEmployee" (personally I like "EmployeeComputer" better).

There's no real right naming convention to use (other than to not use Hungarian Notation).  As long as the object names make sense that it what is important.