Building a card base for Vintage: Sideboards

[Doomsday]

Hello,
I'm trying to build up a base of cards for Vintage and I've been neglecting sideboards.  I thought I would ask the experts to help put together a list of cards that belong in sideboards of the common decks, and the amount of each card necessary (for example if there is any common deck that would sideboard in 4 Pithing Needle vs any other deck, then the number would be 4x Pithing Needle).  Stuff like:

4x Gemstone Mine (Manaless Ichorid sideboard)
2x Wispmare (Ichorid sideboard)
?x Yixlid Jailer (black vs Ichorid)
?x Tormod's Crypt (anything vs Ichorid)
?x Pithing Needle (anything vs ....almost anything)
?x Hurkyl's Recall (blue vs Stax)
?x Echoing Truth (blue vs Ichorid, Stax, etc)
?x Darkblast (black vs Bobs, Welders, Oath, etc)
?x Contagion (Ichorid vs Jailer, etc)
etc

If you guys could list a bunch of the sideboard cards like this I would really appreciate it.  Thanks

[mmcgeach]

so, I recently tried to compile the same kind of list you're talking about; although I'm only interested in playing blue and/or black deck archetypes.

this is what I came up with, but, I do not have the expertise to tell you which are "the best" in which matchups, or the exact number to bring.  Since sideboards seem to be more a matter of debate and discussion, I hope this list will help foster both of those.

WHITE
(white sideboards are rare, but there seems to be lots of interesting possibilities)
enlightened tutor
seal of cleansing (vs. shops, null rods, vault/key)
serenity (vs. stax, null rods)
sacred ground (vs. stax, wastes)
balance (vs. fish)
silence / orim's chant / abeyance  (vs. combo)
swords to plowshares (vs. robot, vs. fish, vs. aggro)
ethersworn canonist (vs. combo)
karmic justice (vs. stax)

BLACK
the abyss (vs. fish, bobs)
perish (vs. goyfs, teegs)
virtue's ruin (vs. teegs, mindcensors)
planar void (vs. ichorid)
leyline of the void  (vs. ichorid, better if you can potentially hardcast)
yixlid jailer (vs. ichorid)
slaughter pact (vs. fish)
smother (vs. fish)
darkblast (vs. fish, bobs, welders)
thoughtsieze (vs. tezz, combo)
extirpate (vs. drains, vs. wastes, vs. ichorid)
infest (vs. fish)
massacre (vs. white fish w/o teeg...)

BLUE
Propaganda (vs. aggro)
arcane laboratory (vs. combo)
energy flux (vs. shops)
hurkyl's recall (vs. shops, nullrods)
rebuild (vs. shops, nullrods, chalice@2)
chain of vapor (vs. fish, rods)
echoing truth (vs. fish, rods)

RED
red elemental blast (vs. tezz)
ingot chewer (vs. shops, rods)
rack and ruin (vs. shops, rods)
pyroclasm (vs. fish)
firespout (vs. fish)
fire/ice (vs. fish, bobs)
ancient grudge (vs. shops)

ARTIFACT
tormod's crypt (vs. ichorid, yawgwill combo)
relic of progenitus (vs. ichorid)
pithing needle (vs. ichorid, shops)
vedalken shackles (vs. fish)
engineered explosives (vs. fish)

(I didn't consider green)

edit: i forgot the control magic effects for blue.  Stuff like Sower of Temptation and Threads of Disloyalty get played some.