Oxymoron:   A rhetorical figure in which an epigrammatic effect is created by the conjunction of incongruous or contradictory terms, for example, ''a mournful optimist.''

33)    Mournful optimist

32)    Government worker

31)    Legally drunk

30)    Exact estimate

29)    Act naturally

28)    Found missing

27)    Resident alien

26)    Genuine imitation

25)    Airline food

24)    Good grief

23)    Government organization

22)    Sanitary landfill

21)    Alone together

20)    Small crowd

19)    Business ethics

18)    Soft rock

17)    Butt head

16)    Sweet sorrow

15)    Now, then....."

14)    Passive aggression

13)    Clearly misunderstood

12)    Peace force

11)    Extinct life

10)    Plastic glasses

9)     Terribly pleased

8)     Computer security

7)      Political science

6)     Tight slacks

5)     Definite maybe

4)     Pretty ugly

3)     Rap music

2)     Working vacation

And the number one top Oxymoron of all time...

1)     Microsoft Works