Selecting a specific entry first, then all others

[jamesp0tter]

i've table:
ID | VAL1
1 | aaa
2 | mmm
3 | bbb

how do i select first the entry that contains "mmm", then all the others ?

tkx in advance

 

[swampBoogie]

select * from t
order by case val1 when 'mmm' then 0 else 1 end