1: Argon and krypton, for two
3: 'All the world's a ___' (Shakespeare)
4: Unit of oil production, briefly
17: Like extreme opposites
28: By no means long-winded
30: Sleeveless outer garment
32: 'To Renew America' writer Gingrich
40: Merrill Lynch's bull, e.g.
43: Soldier's shoulder piece
53: One going downhill fast
54: Lions and Tigers and Bears
55: Ancient Egyptian emblems