Boring stuff, TN.
TN wrote on 07/12/09 at 12:28:14:
Mamedyarov's mad hack against the Four Knights (Rublevsky-Mamedyarov 2007)
Especially 5.Nxd4 is a complete bore, worse than anything the Slav Exchange has to offer.
My recommendations:
Black: Najdorf, Polugajevsky or French Winawer, Poisoned Pawn;
Dutch Leningrad or Iljin-Zjenevsky. I have thought of the Von Hennig-Schara Gambit, but White has a solid few ways to avoid it. Semi-Slav will also do. Remember a few Kramnik-Anand games of last year? More exciting than anything Diemer played as Black.
White: Queen's Gambit Accepted, the e2-e4 gambit lines (allowing ...b5); QGD Exchange Variation with 0-0-0; Four Pawns vs. KID; Taimanov vs. Benoni; Sämisch vs. NID.
This is far more exciting than mind-numbing stuff like the BDG. Then I'd rather recommend one of the various Zilbermintz Gambits - not because they are better (I think they are unsound), but because they are not as stereotypal as the BDG.
Sample games:
Pavlov-Kovalenko, Alushta 2009
Shtirenkov-Amonov, Alushta 2008
Khachyan-Shulman, Saint Louis 2009
Maghalashvili-Mamediarova, Tbilisi 2009
Gajewski-Grachev, Lublin 2009
Two old geezers: Korchnoi-Ljubojevic, Wijk aan Zee 2008
Shulman-Van Wely, Foxwoods Open 2009
Petrosian-Danielian, Yerevan 2009
Heberla-Zeberski, Litomysl 2008
Jobava-Rasulov, Tbilisi 2009
Mamedjarov-Karpov, Moscow 2008
Rinberg-Tarnopolsky, ISRchT 2008