Quick and dirty Photoshop (CS or 7 with scripting support) to add a text layer with EXIF info.

Copy, paste and save the following script in a text file under the Photoshop script directory.

Adapt text font, size and color to your taste.

Sample:

http://dslr.home.comcast.net/stuff/exif_info.jpg

Script:

//========STARTS HERE=======
//
// EXIF Info extraction (c) 2004 M.SKAD
//========================
var savedUnits=app.preferences.rulerUnits;
var thisDoc=app.activeDocument;
app.preferences.rulerUnits=Units.PIXELS;

//==============================
// Include EXIF info
//==============================
var exif_info="";

for (var e = 0; e < thisDoc.info.exif.length; e++){
try {
exif_info = exif_info + thisDoc.info.exif[e][0] + " = " + thisDoc.info.exif[e][1] + "\r";
}
catch (e) {}
}

// alert(thisDoc.info.exif);
text_layer=thisDoc.artLayers.add();
text_layer.kind = LayerKind.TEXT;
textColor = new SolidColor;
textColor.rgb.red = 63;
textColor.rgb.green = 255;
textColor.rgb.blue = 0;
text_layer.textItem.color = textColor;
text_layer.textItem.kind=TextType.PARAGRAPHTEXT;
text_layer.textItem.position = Array(thisDoc.width * 0.05, thisDoc.height * 0.05);
text_layer.textItem.size = 4;
text_layer.textItem.font = "ArialMT";
text_layer.textItem.width = thisDoc.width * 0.8
text_layer.textItem.height = thisDoc.height * 0.8
text_layer.textItem.contents=exif_info;
//==============================

// restore preferences
app.preferences.rulerUnits=savedUnits;

//========ENDS HERE===============





--
Mskad.