Dave mentioned the large number of stellar pitching performances so far this year. That was a couple days ago, and there have been a number since then. I went ahead and tried to compile all the starts of 8 innings or up, with 0 or 1 earned runs. I may have missed a few, but here they are:
Westbrook (4/4 vs CWS), 8IP, 4H, 1ER
Willis (4/6 vs WAS)
CG, 5H, 0ER
Weaver (4/7 vs SFO) 8IP, 5H, 0ER
Buehrle (4/8 vs CLE) 8IP, 2H, 0ER
R. Lopez (4/10 vs NYY) 8IP, 6H, 1ER
Beckett (4/10 vs WAS)
CG, 5H. 0ER
Pedro (4/10 vs ATL)
CG, 2H, 1ER
Hudson (4/12 vs WAS), 8IP, 6H, 1ER
Willis (4/13 vs PHI)
CG, 3H, 0ER
Halladay (4/14 vs
TEX)
CG, 5H, 1ER
Lowe (4/15 vs SDG)
CG, 3H, 0ER
Suppan (4/15 vs MIL) 8.1IP, 5H, 0ER
Chen (4/15 vs NYY)
CG, 4H, 1ER
Heilman (4/15 vs
FLA)
CG, 1H, 0ER (got clobbered 5 days later)
Buehrle (4/16 vs SEA)
CG, 3H, 1ER
Lieber 4/16 (vs ATL) 8IP, 7H, 1ER
Chacin (4/16 vs
TEX) 8IP, 2H, 0ER
Harden (4/16 vs. LAA) 8IP, 4H, 0ER
Weaver (4/17 vs SDG)
CG, 5H, 0ER
Hudson (4/18 vs HOU) 9IP, 4H, 0ER
Byrd (4/18 vs SEA) 8IP, 11H, 1ER
Mulder (4/18 vs PIT) 8IP, 2H, 0ER
Astacio (4/19 vs OAK) 8IP, 6H, 0ER
Lowe (4/20 vs SDG): 8IP, 5H, 0ER
C. Zambrano (4/20 vs STL) 8.2IP, 5H, 1ER
Oswalt (4/20vs MIL)
CG, 4H, 1ER
D. Wells (4/20 vs BAL) 8IP, 3H, 0ER
Garland (4/20 vs DET) 8IP, 5H, 1ER
Colon (4/20 vs CLE) 8IP, 4H, 0ER
Clement (4/21 vs BAL) 8IP, 8H, 0ER
R. Lopez (4/21 vs BOS) 8IP, 5H, 1ER
Carpenter (4/21 vs CHC)
CG, 7H, 0ER
That's a stunning 32 starts (12 complete games), out of 238 total games -- almost 15% of all starts were downright dominant. And 6 of the pitchers (Lopez, Lowe, Weaver, Hudson, Willis, and Buehrle) had 2 each. And more than a couple of these guys got a no decision, or the loss! [Four honorable mentions: Burnett has 2 CG; Clemens has given up 1ER in 21 IP; and two relative unknowns, Maroth and Francis, each gave up 1ER in 7.2 IP...plenty of others who went 7IP, or 8IP and 2ER.] And note that the opposing teams on this list are no slouches: NYY, BOS, BAL, CWS, STL, FLA, etc. (and no Tampa Bay or Rockies!). I wish we could see the stats from other years, but I assume the pitching numbers in 2000-2004 were nowhere near this good. What's going on?!? I refuse to believe it's the S-word, but I also can't think of anything that might be different this season.
UPDATED LIST
Jennings (4/22 vs LAD): CG, 10H, 1ER (at Coors!)
Santos (4/22 vs SFO): CG, 5H, 1ER
D. Bush (4/23 vs BAL): 8IP, 5H, 1ER (loss)
Webb (4/23 vs SDG): 8IP, 5H, 1ER (ND)
Mulder (4/23 vs HOU): 10 IP CG, 4H, 0ER
Johnson (4/24 vs TEX): 8IP, 5H, 1ER, (1st Yankee)
Ponson (4/24 vs TOR): CG, 3H 1ER
Blanton(4/24 vs LAA) 8IP, 6H, 1ER (loss)
Moyer (4/24 vs CLE): 8IP, 6H, 1ER
Garland (4/25 vs OAK): CG, 4H. 0ER
Santana (4/26 vs KAN): 8IP, 5H, 1ER
Halladay (4/29 vs NYY): CG, 3H, 0ER
Bedard (4/29 vs TAM): 8IP, 5H, 0ER
Lawrence (4/30 vs ARI): 8IP, 2H, 0ER
Garland (5/1 vs DET): CG, 4H, 0ER
Towers (5/3 vs BAL): 8IP, 3H, 0ER
D. Cabrera(5/3 vs TOR): 8IP, 4H, 1ER (loss)
Bedard (5/4 vs TOR): 8IP, 4H, 1ER
Arroyo (5/5 vs DET): 8IP, 3H, 1ER
Contreras (5/5 vs KAN): 8IP, 4H, 1ER
Radke (5/5 vs CLE): CG, 3H, 0ER
Santana (5/6 vs TAM): CG, 6H, 1ER
Ponson (5/6 vs KAN): 8IP, 5IP, 1ER
Mussina (5/7 vs OAK): CG, 4H, 0ER
Hampton (5/8 vs HOU): CG, 2H, 0ER
Zambrano (5/8 vs PHI): CG, 5H, 1ER
Robertson (5/9 vs TEX): 8IP, 6H, 0ER
C. Young (5/9 vs DET): 8IP, 6H, 0ER (ND)
Towers (5/9 vs KAN): 8IP, 7H, 1ER
D. Cabrera (5/9 vs MIN): 8IP, 3H, 0ER
Milwood (5/9 vs LAAOA): 8IP, 1H, 0ER
Halladay (5/10 vs KAN): CG, 8H, 1ER
Willis (5/11 vs HOU): 8IP, 6H, 1ER