Reader Charles has been a great source of polling information, so I asked him to put together a list of the 10 most interesting recent polls in Senate and House races. 

Here is his list, not in any particular order:

GA-12 (Barrow – D) ( Cook Index R+9 ) (this is an Operation Counterweight race)
D Poll 10/12 — 48  45 D+3
 
Tenn-4 (DesJarlais, R) ( Cook Index R+13)
D Poll 10 /15 — 49 /44 R +5
 
NV-4 NEW (Cook Index D+2)
R Poll : 10/10  — R+13
 
NY-25 (Slaughter-D )(Cook Index D+5)(This is Operation Counterweight race)
Siena Poll 10/10 — 49/44 D+ 5
 
Illinois Districts 8, 10 11, 12, 13 ,17
We Ask America Poll 10/10
 
Marquette Poll 10/14 — 46/45 R+1
 
Siena Poll 10/14 — 46 / 44 D +2
 
Quinnipiac Poll 10 /14 — 48 / 45 D+3
 
Wenzel Strategies R poll 10 /13 — 49 /45 R+4 
 
Montana Senate
Rasmussen Poll 10 /14 —  48 /48 Tied  
 
Some other resources:
 
Unskewed Presidential Battleground State Polls ( 2004 , 2008 & Blended Party ID )
 
Ohio Early Voting 2012 vs. 2008