Question : Multiple Like Statements -- more effiicient?

I have this query with the conditions of username like %.  I wondered if there is an easier way to do this without having to break into two separate blocks.
Also, is there a more efficient way to get the Dates that I'm using?  

where username like 'gp0%'  
and r.key3 <>0
--and detail = 'INVOCATION_BEGIN'
and type in ('FD_Command','FD_SAVE','FD_SKIP')
and (ra.action_time between (CAST(convert(varchar(10),getdate(),120)+' 12:00:00' as datetime)-1)
and (CAST(convert(varchar(10),getdate(),120)+' 12:00:00' as datetime)-0))

or username like 'ybrant0%'  
and r.key3 <>0
--and detail = 'INVOCATION_BEGIN'
and type in ('FD_Command','FD_SAVE','FD_SKIP')
and (ra.action_time between (CAST(convert(varchar(10),getdate(),120)+' 12:00:00' as datetime)-1)
and (CAST(convert(varchar(10),getdate(),120)+' 12:00:00' as datetime)-0))

Answer : Multiple Like Statements -- more effiicient?

where (username like 'gp0%'  or username like 'ybrant0%' )
and r.key3 <>0
--and detail = 'INVOCATION_BEGIN'
and type in ('FD_Command','FD_SAVE','FD_SKIP')
and (ra.action_time between (CAST(convert(varchar(10),getdate(),120)+' 12:00:00' as datetime)-1)
and (CAST(convert(varchar(10),getdate(),120)+' 12:00:00' as datetime)-0))