H1B US Visa and H4 US Visa document list for OFC and Interview

If you are in process of getting H1B US Visa and H4 US Visa stamped, its important that one is aware of the list of documents required for the OFC and Interview. Though this list has been provided at many places, but its mostly states lot of unneccssary documents which are never asked in the process. Below list is based on my own experience of getting H1B and H4 Visa stamped in FEB-2013.

H1B US Visa(no H4 dependents)
OFC:
1. Appointment letter(printout)
2. DS-160 Confirmation page
3. Original passports(Old and new)
4. Payment receipt (Only if not paid online)

Interview:
1.Appointment Letter
2.Same DS-160 Confirmation page the you carried for OFC
3.Original passports (Old and new)
4.I797 (photocopy and Original)
5. Degree certificates (photocopy and Original)
6. Original Mark sheets (photocopy and Original)
7. Experience Letters (photocopy and Original)
8. BEP Letter (Only if your employer provides it)
9. Payment receipt (Only if not paid online)
10. I129S, LCA and Justification letters( printed)

H1B US Visa along with H4 (wife and kid)
OFC:
1. Appointment letter(listing appointments for yourself and dependents)
2. DS-160 Confirmation page for yourself and dependents
3. Original passports(Old and new)
4. 1 Kids photograph(less then 14 years old) and if he is not attending OFC and interview

Interview:
1.Appointment Letter
2.Same DS-160 Confirmation page the you carried for OFC
3.Original passports (Old and new)
4.I797 (photocopy and Original)
5. Degree certificates (photocopy and Original)
6. Original Mark sheets (photocopy and Original)
7. Experience Letters (photocopy and Original)
8. BEP Letter (Only if your employer provides it)
9. Payment receipt (Only if not paid online)
10. I129S, LCA and Justification letters( printed)
11. Marriage certificate (photocopy and Original)
12. Wedding album( only 20-30 photos)
13. Birth Certificate(Kid)
14. Last two pay slips along (IT returns)
15. Resume

H4 dependent( without primary applicant)
OFC:
1. Appointment letter(printout)
2. DS-160 Confirmation page
3. Original passports(Old and new)
4. Payment receipt (Only if not paid online)

Interview:
1.Appointment Letter
2.Same DS-160 Confirmation page the you carried for OFC
3.Original passports (Old and new)
4.Passport photocopy of H1B visa holder
5. I797 (photocopy)
6. BEP Letter (Only if your employer provides it)7. Payment receipt (Only if not paid online)
8. I129S, LCA and Justification letters( printed)
9. Marriage certificate (photocopy and Original)
10. Wedding album( only 20-30 photos)
11. Birth Certificate(Kid)
12. Last two pay slips along (IT returns)

Important points:
1. Kids below 14 are not required to attend the interview and OFC. Carry the required documents for them as per the above list.
2.Photocopies are not required for any document, when officers ask for the doc you can show the original docs. But in this case make sure you get your originals back, as apart from passports you don't have to submit any original document at consulate. 
So its better to carry photocopies along with original and provide the photocopies if requested by the officers. Only if the officer insist provide them with the Original and make sure you get them back before leaving the window, otherwise they are lost.
3.Having all the required documentation is the key for getting your visa approved, any thing officer demands you must be in position to show it. I have seen people not able to answer very basic question, but just they had the required docs visa officer had no option but to approve the Visa.
4. Bind your Old and new passports together.
5. Make separate sets of your documents for yourself and dependents. So your wife carries Wedding ablum, birth certificate and Marriage certificate and you carry all other stuff.
6. Carry docs in Transparent Folders, memorize the sequence. This helps to provide the officer with required docs, as they have only few minutes to complete each applicants process.