"Needless to say"-- if something is needless to say,

[raccoon]

then why does somebody even bother to say it? :shrug:

[HopeHoops]

1. Needless to say they feel a reason.

[Tuesday Afternoon]

2. Needles to sew

eh?

[Tuesday Afternoon]

3. hic

up

[Forkboy]

4. And now, a man who needs no introduction.....

[petronius]

5. They mean one of two things:

1) they love the sound of their own voices, and think that making pronouncements makes them important, or
2) they think that you're so stupid that you need to hear it, even though it's needless for everyone else.

Either way, the phrase should be a signal to tune out...

[MiddleFingerMom]

6. Sometimes we are COMPELLED toward the unnecessary.

.
.
.
.
.
.
.
.
.
.
.
.
Nanci Griffith in her "Love at the 5 & Dime" live version on "One Fair Summer Evening":
.
"we were driving through central London and we came around the corner and by golly there
was a Woolworth's store! And I wanted them to stop the car and let me out so I could go
fill up my suitcase with unnecessary plastic objects!"
.
.
.
"Love at the 5 & Dime":
.
http://www.youtube.com/watch?v=SwevqcForgM
.
.
.

[Boojatta]

7. Maybe somebody is indulging in optional speaking, rather than saying only what needs to be said.

[baldguy]

8. The same reason "common sense" isn't all that common.