Hmm - dh was wonderful. He didn't offer me any "helpful" advice or suggest that he knew what I was going through, and won lots of brownie points for that. In fact he didn't say a lot, but smiled at me and made me feel very very special.
He did count the time down, with each contraction, once they got quite bad.
Me: Here comes another one . .
Dh: Ten, nine, eight . . .
Just once he started counting up from one and that was awful as it suggested to me that the pain could go on indefinitely!! Counting down gave me something to aim for (and he was really good at counting just slowly enough (or at inserting a tiny cough) to see me through to the end of the contraction.)
We also learned some basic back massage techniques, which was looooovely. All he did was rub both hands up my spine for about twelve inches - quite firmly, starting at the base - and then slide them out and round in a circle till they got back to the beginning again. It was fantastic, though when our trainee midwife tried it, she was awful! She got the sack after one contraction! (And it definitely had to be up the spine, not down. That didn't work at all!)
Best of luck. Hope you find a few tips which help to make this a special day for you both.
PS don't forget to have food handy for dh. My contractions were strong and every five minutes from the start and he didn't have a lot of time to get food for himself before being back on hand crushing duty.