Fortunately there hasn´t been any vac updates in the past weeks and the amount of vac-proof hacks has raised as high as never before. Here is a list with the most known public hacks that are proof at this time ( January 8th 2005 ) :
[m-inc] Hack V2 , {Psylence} Slayor (Slay0r 3.44) , 1337 GL Hack , 7hUnDeR$tRuCk v1.0 , aCiDlAkE , Antivac 3.8 , Ap0c's 0wN v1.3 , Busti´s Hack + Spamscript , Camcorder , Cheat-o-matic by Kakarot , Client Hack Pack , CN Hack 1.0 by DavVv and Sruh , DarkGL Private v0.1 , FinaLFx - Beta , FinaLFx - Beta (Tweak) , FuRiousSP 9.2 , FuRiousSP v8.9 , FuRiousSP v9.0 , GFX Hook by nK|Keisuke , GhoZtDog'z MonsteR GL 1.4 , Godsson PureGL , Hybrid Hack Pack , Joolz Cheat 4.11 , Maximum Zanity 1.0 , Mosquito , Mosquito reprooved (9.x) , OGC 4.3 Reborn v4 by Da_BuzZ , OGC 9.01 , OGC FireBird by Sruh and P47R!CK , OGC Opengl Hack 2.7 , OGC Xtreme , OGC Xtreme Tweak , OGL Hack Pack , OGL Hack Pack v2 , RF Mini GL by RobotFood , RF MiniGL v2 , RFMiniGL Version 2.5 , S3v3nDS!x3rs , SiN Public Hack , Slay0r 3.44 (revaced) , Syntax Error v1.0 , TimberlandsHybrid , Twlight Gl , V0gelz ESP v2.0 , V0gelzESP v3 , VAC Disabler v2 , YaMH v2.0 by h1web , YaYo DiAmOnD v1.3 , ....
Please keep in mind that Valve may update the VAC-Modules for CS 1.6 anytime soon. These hacks are proof at the time of their releases and will probably get detected with the next vac update. Possibly Valve is having their focus on CS:Source and it´s anticheat development at the moment . But you never know ...