SORRY: I'm going to interrupt you, but if I say this, it sounds like I'm being polite
Sorry to interrupt your lunch, but..
"Your lunch is less important than my problem"
You make a good point, but...
You are wrong, and I am going to explain why.
-Otanx
That's interesting = Did you even attempt basic troubleshooting before bugging me about your issue?
We need to roll up our sleeves = the request for additional headcount got rejected
We have a tight implementation schedule for this project = push out the realistic end date by at least 6 months.