Data formats
  CD-DA - compact disk digital audio (standard music cd)
   - very little error correcting, uses interpolation to make up missing/bad
     bytes.  Standard sampling and encoding. Red book.

  Data (mode 1) - heavy error correcting. Yellow book. 

  Data (mode 2,XA)
  Most of the following use Mode 2 form 2 or XA at sector level. Although some 
    may have custom sector layout. Other colored books? :)

  Video, hi def audio.
   (most of these would be mode 2/XA)

    CD+G and CD+EG - 320x200 Graphics (low-res TV recordings, Karaoke).

    CD-i - compact disk interactive (Green book) 
     - gaming CDs that do not require computer gaming console.

    Photo-CD, Picture-CD - (Beige book)
     - Kodak protocol for storing hi-def pictures on Mode2/XA .

    SACD - Super Audio CD (dual layer). (Based on Red book)
      Uses cd laser but with different focal length. (4-9GB)
     
    HDCD - High definition compatible CD
      (Pacific Microsonics bought by Microsoft, 2005 obsolete)
       20-bit samples rather than 16-bit. Special encoding.

    DTS - Digital Theater Surround (CD-DA? with DTS encoding)
      Pre-processing of recording before storing on CD.

    Video-CD - digitally encoded film before DVD. (White book) MPEG-1
      Dedicated VCD player and most DVD players. Uses CD laser and XA mode.
      Most likely 320x200 (about 1/4 of a standard 4:3 TV screen).

    CD-Video (Compact Disc Video, CD-V, analog video encoding). 
      5-minutes of video. Similar to Laser-disc. Obsolete 1991-ish.

    DVCD - Double VCD - pushed limits of cd storage. dual layer VCD.
      wikipedia topic : Video CD

Note the way data is formatted on the disk modes is independent
of the way the information is encoded on those recorded sectors. 

This should mean that as long as you have the right decoding software,
  Most of the above formats recorded on a standard CD/CD-r is readable.
  * Dual layer CDs may require special readers.