Here is a formula that you could use to create a new column of names and which removes some of the variability. It is a long way from a perfect solution, but it should reduce the number of mismatches.
Using your Great Gatsby examples it returns "Great Gatsby" for three variations of the name as follows:
2 The Great Gatsby Great Gatsby
3 Great Gatsby Great Gatsby
4 Great Gatsby , The (2008) Great Gatsby
The original listing is in column A, starting in cell A2
In cell B2 enter this formula:
IF(LEFT(A2,4)="The ",RIGHT(A2,LEN(A2)-4),A2),LEFT(IF(LEFT(A2,4)="The ",
The formula has been split onto 4 lines for ease of viewing, so it will have to be reassembled to make a single formula.
Then drag the formula down as many rows as required.
I have only tested it on this minimal sample, so I can't tell how it will handle all the various combinations of names in you list.
If there are extra leading or trailing spaces with some entries, you could wrap the whole of the above formula in TRIM(), to remove them. You might try doing the same for the titles you are looking up.
Regarding adding TRIM() to the formula, if you are using Excel 2003, you can't use TRIM() directly as you exceed the levels of nesting allowed, so in cell C2 use this formula =TRIM(B2) and do your VLOOKUP() on column C instead. Although I haven't tried it, you should be able to add TRIM() as part of the formula in cell B2 when using Excel 2007.
Hope that this is of interest to you.