Returning several values from a column if they're a match

[Ranu]

Hey guys,

Here is the thing:
I've got this table where I have 2 columns. One that contains TEXT (name of the task that needs to be done), one that contains DATE (due date of the task).

I'd like to be able to see "what tasks need to be done" by typing in a specific cell their due date.
Just to help you understand, let's name "Task one" T1, "task two" T2, etc.

T1, T2, T5 and T6 are due on 01/01/2012
T3 and T4 are due on 02/02/2012

If, in my cell I type "01/01/2012" then it will return me the list of the tasks that have to be done on THIS specific day like that :
T1
T2
T5
T6
(I don't care much in which order, I just want it to be a list. Each task in a separate cell)

I've tried using the "lookup" function and telling the function to look for the value I enter in my cell in DATE and then return me the value from the same line in the TEXT column, but I'm stuck. The lookup function returns only ONE value (since it's in ONE cell), if I type the same function all the way, it always return the same value. Basically, I'm currently stuck if I have several possible values.

I'd either need to be able to tell my lookup function "Hey buddy, don't return me the same result twice. If this one is already listed above, then find the next one" or I need to just find another way around.

Any thoughts on this ?
Thanks in advance, and I hope I was clear enough in my explanation!