As I'm in an apartment where I get free cable with the rent, here's my list courtesy of Time Warner Cable (This goes for much of North Texas served by TWCable):
2 - C-SPAN (KDTN [Daystar] was on this slot, but for some reason, they eliminated it and kept its digital version on Ch. 350. Not like I watch it anyway)
3 - Discovery Channel
4 - KDFW (Fox)
5 - KXAS (NBC)
7 - KDFI (MyNetworkTV)
8 - WFAA (ABC)
9 - KDAF (CW)
10 - KXTX (Telemundo)
11 - KTVT (CBS)
12 - KTXA (Independent)
13 - KERA (PBS)
14 - KFWD (MundoFox)
17 - KDTX (TBN)
18 - Eternal World Television (EWTN)
20 - KSTR (TeleFutura)
21 - KAZD (Azteca America)
22 - QVC
23 - KUVN (Univision)
24 - KTXD (Me TV)
25 - WGN America
26 - KPXD (Ion Television)
29 - KMPX (Estrella TV)
30 - Galavision (at my end, I'm seeing their HD feed scrunched up in a standard 4:3 screen)
31 - NBC Sports
32 - Spike
33 - ESPN2
34 - ESPN
35 - Golf Channel
36 - Fox Sports Southwest
37 - The Weather Channel
39 - HLN
40 - CNN
41 - Fox News Channel
42 - MSNBC
43 - CNBC
44 - TBS
45 - TNT
46 - USA
48 - FX
49 - E!
51 - Lifetime
52 - Food Network
53 - HGTV
54 - A&E
55 - History
56 - Speed
57 - TLC
58 - Animal Planet
59 - Nickelodeon/Nick-@-Nite
60 - Disney
62 - Cartoon Network/Adult Swim
64 - Comedy Central
65 - Syfy
66 - TV Land
67 - G4
68 - Turner Classic Movies
69 - MTV
70 - VH1
71 - TV One
72 - BET
74 - Travel Channel
75 - HSN
76 - Bravo
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C-SPAN's 2 (28) & 3 (6), All the community access channels (16, 95-99), Sonlife Broadcasting Network (15), TXCN: Texas Cable News (38), TruTV (47), ABC Family (61), CMT (63), and Oxygen (73) are only viewable with a digital set-top box. Though I wish Time Willy-Nilly...err...Time Warner Cable would leave TruTV and ABC Family alone.
IMO, I think VH1, MTV, Fox News Channel, TLC and MSNBC should've been the ones switched to digital. Though it's only a matter of time before we're all required to get a set-top box to continue watching.